All Thinkers

Thinkers Timeline

Key thinkers across history — grouped by era, colour-coded by discipline. Click any card to explore ideas, quotations, and classroom contexts.

Filter by subject area

Biology 4 Chemistry 4 Physics 2 Mathematics 8 Medicine & Health 5 Technology & Engineering 5 Psychology 2

Philosophy 29 History 9 Literature 34 Language & Linguistics 5 Arts 9

Anthropology & Culture 8 Sociology 7 Religion 5 Education 5 Politics 16

Law 6 Economics 13 Business & Management 6

Era: Modern ×

Early Modern — 1500 to 1800

Immanuel Kant 1724-1804 · Prussia (Germany) →

Immanuel Kant was a German philosopher. He is one of the most influential thinkers in the history of Western philosophy. He was born on 22 April 1724 in Königsberg, a city in East Prussia (now Kaliningrad, Russia). His family was Lutheran and not wealthy. His father was a saddle-maker. His mother, who died when he was 13, was a strong early influence and encouraged his studies. He studied at the University of Königsberg from the age of 16. He worked for several years as a private tutor for noble families before returning to the university as a lecturer in 1755. He became a full professor of logic and metaphysics in 1770. He stayed in Königsberg his whole life. He is said never to have travelled more than about 150 kilometres from his birthplace. His daily routine was famously strict: neighbours were said to set their watches by his afternoon walks. For most of his career he was a respected but not famous teacher. Then, starting in his late fifties, he wrote a series of huge books that changed philosophy. The Critique of Pure Reason (1781), the Critique of Practical Reason (1788), and the Critique of Judgement (1790) set out a new system. He wrote important shorter works on ethics, religion, politics, and history. He continued writing until his death on 12 February 1804, aged 79. His work is hugely influential, but parts of it are also troubling. He wrote racist statements about non-European peoples. These texts sat alongside his claims about universal human dignity. Modern scholarship has taken this tension seriously, and honest study of Kant now includes this difficulty.

"Enlightenment is man's emergence from his self-imposed immaturity."

Toussaint Louverture c. 1743-1803 · Haiti (Saint-Domingue) →

Toussaint Louverture was the main leader of the Haitian Revolution. This was the only successful slave revolt in modern history. It turned a French slave colony into the first free Black republic in the world. He was born around 1743 on a sugar plantation called Bréda, in the French colony of Saint-Domingue. Today we call this country Haiti. His exact birth date is not known. His parents were enslaved people, probably brought from West Africa. Toussaint was born into slavery. But his life was unusual. His owner allowed him to learn to read and write. He studied French, some Latin, and medical herbs. By his fifties, he had been freed and owned a small coffee farm. He even owned a few enslaved people himself, which was common for free Black men at the time. This complicated background shaped his later choices. In 1791, a massive uprising began on the colony's northern plain. Enslaved people burned plantations and killed their owners. Toussaint joined the revolt but was not yet its leader. Over the next decade, through brilliant military campaigns, he rose to command. He defeated Spanish armies, British armies, and several French armies. He wrote a constitution for the colony in 1801 and made himself governor for life. In 1802, Napoleon sent a huge army to restore slavery. Toussaint was tricked into a meeting under a flag of truce and captured. He was shipped to France and locked in a freezing cell in the Jura mountains. He died there on 7 April 1803, cold and starving. But the revolution he had led did not die. The next year, his former generals defeated the French and declared Haitian independence on 1 January 1804.

"In overthrowing me, you have cut down in Saint-Domingue only the trunk of the tree of liberty. It will spring up again by the roots, for they are many and deep."

Jeremy Bentham 1748-1832 · England →

Jeremy Bentham was an English philosopher and legal reformer. He was the founder of modern utilitarianism. He was born on 15 February 1748 in London, into a wealthy lawyer's family. He was a child prodigy. He started learning Latin at age three and entered Oxford University at twelve. He qualified as a lawyer but never practised law. He thought the English legal system was a mess of confused rules that harmed the people it was meant to serve. He spent the rest of his life trying to reform it. He inherited enough money to live without working. For nearly 60 years, he wrote almost every day. He produced thousands of pages on law, government, punishment, economics, and ethics. Much of his work was not published during his lifetime. He would start a book, follow his thoughts into new topics, and leave the book unfinished. His friends and disciples, including James Mill and later James's son John Stuart Mill, edited and published large parts of his work. Bentham's main book, An Introduction to the Principles of Morals and Legislation, appeared in 1789. It set out his core principle: the measure of a good action or a good law is whether it produces the greatest happiness for the greatest number of people. This principle, called the 'principle of utility', became the foundation of utilitarianism. His influence on law and politics in Britain was enormous. He helped design prisons, wrote model constitutions for foreign governments, and shaped the reform movements of the early 19th century. He had unusual ideas. He designed a new kind of prison, the Panopticon, that has since become a famous image of surveillance. He argued against laws punishing homosexual acts, centuries before this became widely accepted. He left instructions for his body to be preserved after death and displayed in a wooden cabinet. His preserved body, called the 'auto-icon', is still on display at University College London, which he helped inspire. He died on 6 June 1832 in London, aged 84.

"It is the greatest happiness of the greatest number that is the measure of right and wrong."

Katsushika Hokusai 1760-1849 · Japan (Edo / Tokyo) →

Katsushika Hokusai (1760-1849) was a Japanese painter and printmaker of the Edo period, widely regarded as the greatest artist of the ukiyo-e tradition and one of the most influential artists in world history. He was born in the commoner district of Edo (modern Tokyo) to an artisan family. Apprenticed at fifteen to a woodblock cutter, he entered the studio of the print designer Katsukawa Shunsho at eighteen and spent his twenties learning the trade. He changed his artistic name over thirty times across his long career, each change marking a stylistic shift or a new artistic ambition. The name Hokusai, meaning north studio, dates from his middle years. He produced an enormous body of work: book illustrations, sketches, paintings, and the printed series for which he is most famous. In his early seventies he began the series Thirty-six Views of Mount Fuji, which includes the Great Wave off Kanagawa and Red Fuji — two of the most widely recognised images in the world. He also produced the Hokusai Manga, fifteen volumes of drawings covering every conceivable subject, from birds and fish to grimacing faces and imaginary creatures. He lived in poverty for much of his life, moved house more than ninety times, and continued working into his late eighties. He died at eighty-eight, lamenting that he had not been given another ten years of life to become a true artist.

"From the age of six I had a mania for drawing the shapes of things."

Georg Wilhelm Friedrich Hegel 1770-1831 · Germany →

Georg Wilhelm Friedrich Hegel was a German philosopher. He was the last of the great system-builders in Western philosophy. He was born on 27 August 1770 in Stuttgart in southern Germany. His father was a civil servant. His mother taught him Latin before he started school but died when he was eleven. He had one sister, Christiane, who became very close to him. Hegel studied philosophy and theology at the University of Tübingen. There he became friends with two other young men who would become famous: the poet Friedrich Hölderlin and the philosopher Friedrich Schelling. The three were excited by the French Revolution, which broke out in 1789 when Hegel was nineteen. For years Hegel struggled to find an academic post. He worked as a private tutor in Switzerland, then in Frankfurt. In 1801 he became an unpaid lecturer at the University of Jena. There he wrote his first major book, the Phenomenology of Spirit. He famously finished the manuscript on the same day Napoleon's army arrived in the city in October 1806. The book was published in 1807. Hegel's career then bounced around. He worked as a newspaper editor in Bamberg, then as a high school principal in Nuremberg. He married Marie von Tucher in 1811. In 1816 he became a professor at Heidelberg, then at Berlin from 1818. By the 1820s he was the most famous philosopher in Germany. His lectures filled large halls. He died of illness, possibly cholera, on 14 November 1831 in Berlin, aged 61.

"The owl of Minerva spreads its wings only with the falling of the dusk."

Ludwig van Beethoven 1770 - 1827 · Germany / Austria →

Ludwig van Beethoven was a German composer and pianist. He was born in 1770 in Bonn, in what is now Germany. He is one of the most important composers in the history of Western music. He was baptised on 17 December, so he was probably born a day or two earlier. He came from a musical family. His grandfather was a respected court musician. His father, Johann, was also a musician but a difficult man and a heavy drinker. Johann saw young Ludwig's talent and pushed him hard, sometimes cruelly, hoping to create a child star like Mozart. Beethoven gave his first public performance at the age of seven. In 1792, aged 21, he moved to Vienna, the music capital of Europe. He studied briefly with Joseph Haydn. He soon became famous in Vienna, first as a pianist and then as a composer. Wealthy noble families paid him to write music. He never took a full court post. He preferred to work as a freelance composer, which was unusual for his time. In his late twenties, he began to lose his hearing. By his forties he was almost completely deaf. He kept composing, often using a notebook to communicate with visitors. His later works, including the Ninth Symphony, were written when he could no longer hear them properly performed. He never married, though he loved several women, often unhappily. He died in Vienna in 1827, aged 56. Around 20,000 people attended his funeral.

"Music can change the world."

Simón Bolívar 1783-1830 · Venezuela →

Simón Bolívar was a military leader and political thinker who led much of South America to independence from Spain. In Latin America he is known as 'El Libertador', the Liberator. He was born on 24 July 1783 in Caracas, in what is now Venezuela. His family was part of the wealthy Creole class: people of Spanish descent born in the Americas. His parents died when he was young, and he was raised by uncles and a close teacher, Simón Rodríguez, who shaped his ideas deeply. As a young man, Bolívar travelled in Europe. He saw Napoleon crowned emperor in Paris in 1804. He watched the French Revolution's promises turn into Napoleon's empire. He also read widely: Rousseau, Voltaire, Montesquieu, and other Enlightenment thinkers. These experiences shaped his sense of what politics could and could not achieve. Bolívar returned to South America determined to free it from Spanish rule. Between 1810 and 1825, he led long military campaigns across huge distances. He crossed the Andes mountains with his army in conditions that killed many of his soldiers. He won key battles at Boyacá (1819), Carabobo (1821), and Ayacucho (1824, commanded by his general Sucre). By the end of these wars, Spain had lost its mainland American colonies. Six modern countries were born from this struggle: Venezuela, Colombia, Ecuador, Peru, Bolivia (named after him), and Panama. Bolívar hoped to unite these new nations into one great republic. He called it Gran Colombia. But the project failed. Regional rivalries, personal ambitions, and the size of the territory tore it apart. Bolívar died of tuberculosis on 17 December 1830, aged 47, on his way into exile. He died disappointed, saying famously that he had 'ploughed the sea'.

"A people that loves freedom will in the end be free."

Mary Shelley 1797-1851 · England →

Mary Shelley (1797-1851) was an English novelist whose Frankenstein, or the Modern Prometheus, written when she was eighteen years old, is widely regarded as the founding work of science fiction and one of the most influential novels in the English language. She was born in London to William Godwin, the political philosopher, and Mary Wollstonecraft, the author of A Vindication of the Rights of Woman. Her mother died days after giving birth to her, and Mary grew up in a household filled with books and visitors from the radical circles of her father. At sixteen she eloped with the poet Percy Bysshe Shelley. In the summer of 1816, during a cold and rainy holiday at the Villa Diodati on Lake Geneva, Lord Byron proposed that each member of their company write a ghost story. Over the following months Mary wrote Frankenstein, published in 1818. Her life was marked by loss: three of her four children died in infancy or childhood, her husband drowned in 1822, and she was left at twenty-four to raise her surviving son alone and to support herself by writing. She produced further novels, including The Last Man, a post-apocalyptic narrative written after Percy's death, as well as travel writing, short stories, biographical essays, and careful editions of her husband's poetry. She died of a brain tumour in 1851, aged fifty-three.

"Learn from me, if not by my precepts, at least by my example, how dangerous is the acquirement of knowledge."

Mary Anning 1799-1847 · England →

Mary Anning (1799-1847) was an English fossil collector and self-taught palaeontologist whose discoveries on the cliffs of Lyme Regis in Dorset transformed scientific understanding of the deep past. She was born into a poor Dissenting Protestant family that made part of its living by selling curiosities — fossils and shells — to summer visitors on the south coast of England. Her father Richard taught her and her brother Joseph how to find fossils in the crumbling cliffs of the Blue Lias. He died when she was eleven, leaving the family in debt. Mary took up fossil hunting as a trade to support her mother and brother. At about twelve, she and Joseph uncovered the first complete ichthyosaur skeleton known to science, a marine reptile that had been unknown before. Over the following decades Mary made many further extraordinary finds on her own: the first complete plesiosaur, the first British pterosaur outside the usual fossil record, important ichthyosaurs, and fossil fish with preserved ink sacs. She learned enough anatomy, geology, and classical languages to read the scientific papers written about her finds — and to correct them. The gentlemen geologists who bought her specimens and published descriptions of them sometimes credited her by name and sometimes did not. She died of breast cancer at forty-seven, still poor despite the scientific importance of what she had found.

"The world has used me so unkindly, I fear it has made me suspicious of everyone."

Modern — 1800 to 1950

Harriet Martineau 1802-1876 · United Kingdom →

Harriet Martineau was an English writer and social theorist. Many scholars now call her the first woman sociologist. She was born on 12 June 1802 in Norwich, England. Her family were Unitarians, a religious group that valued education for girls and liberal ideas. She was the sixth of eight children. From around the age of twelve she began to lose her hearing. By her twenties she was almost completely deaf. She used an ear trumpet (a kind of early hearing aid) for the rest of her life. Her father's cloth business failed before he died in 1826. The family lost most of its money. Most women of her class would have become governesses or wives. Martineau's deafness made teaching hard. She chose to write for a living instead. She succeeded. By the 1830s she was one of the most famous writers in Britain. In 1832-34 she published Illustrations of Political Economy. This was twenty-five short story books that taught economic ideas to ordinary readers. The series sold hugely. Queen Victoria invited her to her coronation in 1838. In 1834-36 she travelled around the United States. She met abolitionists, attended anti-slavery meetings, and wrote Society in America (1837). This book made her enemies in the American South. She kept writing for forty more years. She produced sociology, history, novels, children's books, travel writing, and around 1,600 newspaper articles. She died on 27 June 1876, aged 74, at her home in the English Lake District. Her Autobiography was published the next year.

"Readers are plentiful: thinkers are rare."

Flora Tristan 1803-1844 · France and Peru →

Flora Tristan was a French-Peruvian writer and activist. She was one of the earliest voices to link women's liberation with workers' liberation. She was born on 7 April 1803 in Paris. Her father, Mariano Tristán y Moscoso, was a Peruvian colonel in the Spanish army and came from a powerful family in Arequipa, Peru. Her mother, Anne-Pierre Laisnay, was French. Her parents were married in a church in Spain but never registered the marriage with civil authorities. This made the marriage legally invalid under French law. When her father died suddenly in 1807, the family lost its wealth. Flora, now legally illegitimate, grew up poor. At 18, her mother pushed her into marriage with her employer, a print engraver named André Chazal. The marriage was miserable. Chazal was violent. Flora left him in 1825, taking her children. This was almost impossible in France at the time. Napoleon's laws had banned divorce. A separated wife had no legal rights to her children or her earnings. Flora spent the next years as a working-class single mother, on the run. In 1833, she sailed to Peru, hoping her father's wealthy family would recognise her. Her uncle Pío welcomed her warmly but refused to give her the inheritance. She stayed almost a year, observing Peruvian society closely. On her return, she wrote a famous travel book, Peregrinations of a Pariah (1838). The same year her book came out, Chazal tracked her down and shot her in the street. The bullet stayed lodged near her heart for the rest of her life. He was sentenced to 20 years. She visited London twice and wrote Promenades in London (1840), describing the horrors of English factories. Her most important book, The Workers' Union (1843), called for a global organisation of workers, men and women together. In 1844, she toured France by stagecoach to build this union. She fell ill in Bordeaux and died of typhoid on 14 November 1844, aged 41. Ten thousand people followed her funeral.

"Workers, unite!"

Charles Darwin 1809-1882 · England, United Kingdom →

Charles Darwin (1809-1882) was an English naturalist and biologist. He was born in Shrewsbury into a wealthy and intellectually distinguished family: his grandfather Erasmus Darwin had written about the idea of species transforming over time. He studied medicine in Edinburgh and then theology at Cambridge, but his real passion was natural history. In 1831, at the age of twenty-two, he joined the voyage of HMS Beagle as the ship's naturalist on a five-year journey around the world. What he observed on that voyage, particularly the variation among species on the Galapagos Islands, planted the seeds of his great theory. He spent the following twenty years accumulating evidence and working out his ideas before publishing On the Origin of Species in 1859. He knew the book would be controversial and he was right: it transformed not only biology but how human beings understood themselves and their place in the natural world. He spent the rest of his life at his home in Kent, continuing to work on natural history, corresponding with scientists worldwide, and quietly revolutionising biology from his study and garden. He died in 1882 and was buried in Westminster Abbey.

"There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved."

Søren Kierkegaard 1813-1855 · Denmark, Northern Europe →

Søren Kierkegaard (1813-1855) was a Danish philosopher, writer, and theologian. He was born in Copenhagen, the youngest of seven children, and spent almost his entire life in that city. His father was a wealthy merchant who was deeply religious and had a dark, guilt-ridden character that had a profound effect on Søren. Kierkegaard studied theology at the University of Copenhagen and fell deeply in love with a young woman named Regine Olsen, who he became engaged to and then, mysteriously, broke off the engagement with. This rupture haunted much of his later writing. He wrote an enormous amount in a short life: philosophical works, religious meditations, literary criticism, and a sustained public argument with the established Danish Lutheran church, which he believed had become comfortable and dishonest. He published many works under pen names, using different voices to explore different philosophical positions. He died at forty-two, and much of his work was not read widely outside Denmark until the twentieth century, when it became a major influence on existentialism, theology, and literary theory.

"The most common form of despair is not being who you are."

Ada Lovelace 1815-1852 · England →

Augusta Ada King, Countess of Lovelace (1815-1852), usually known as Ada Lovelace, was an English mathematician widely regarded as the author of the first published algorithm intended to be run on a machine. She was the only legitimate child of the poet Lord Byron and Annabella Milbanke, a mathematically inclined aristocrat who separated from Byron a month after Ada's birth. Annabella worried that her daughter might inherit her father's volatility and insisted that Ada be given a rigorous education in mathematics and science — unusual for a girl of her class at the time. Ada studied with tutors including the mathematician Augustus De Morgan and the scientist Mary Somerville. In 1833, at seventeen, she met Charles Babbage, the mathematician designing mechanical calculating machines. She became his close intellectual collaborator over the next two decades. In 1843 she translated an article on Babbage's proposed Analytical Engine from French, adding her own extensive notes that more than tripled the length of the original. These notes, published under her initials AAL, contain the first detailed algorithm designed for machine execution and a remarkable philosophical discussion of what such a machine could and could not do. She married William King, later Earl of Lovelace, and had three children. She died of uterine cancer at thirty-six, having published only the one major work but having thought further into the future of computing than almost anyone of her century.

"The Analytical Engine has no pretensions whatever to originate anything. It can do whatever we know how to order it to perform."

Frederick Douglass c. 1818-1895 · United States →

Frederick Douglass (c.1818-1895) was an American abolitionist, orator, writer, and statesman. He was born into slavery in Talbot County, Maryland, the son of an enslaved woman and almost certainly a white man, possibly his owner. He was separated from his mother as an infant, as was standard practice under slavery, and grew up on plantations and in the household of a Baltimore family, where he secretly taught himself to read. He escaped from slavery in 1838 at the age of approximately twenty, making his way to New York and then to New Bedford, Massachusetts. He became an agent of the Massachusetts Anti-Slavery Society and quickly emerged as one of the most powerful orators in America. His Narrative of the Life of Frederick Douglass, an American Slave (1845) was one of the most widely read abolitionist documents of the era. He went on to edit influential newspapers, write two further autobiographies, advise President Lincoln during the Civil War, and serve in several government positions including Marshal and Recorder of Deeds for the District of Columbia and US Minister to Haiti. He died in 1895. He was one of the most photographed Americans of the nineteenth century — he understood the political importance of images of Black dignity.

"Once you learn to read, you will be forever free."

Ignaz Semmelweis 1818-1865 · Hungary / Austria →

Ignaz Semmelweis (1818-1865) was a Hungarian physician working in Vienna. He was born in Buda, in what is now Budapest, and studied medicine at the University of Vienna, where he became a senior assistant in the maternity ward of the Vienna General Hospital. There he confronted one of the most disturbing puzzles in medicine: women giving birth in the First Maternity Division of the hospital, which was staffed by medical students and doctors, died of childbed fever at a rate of about ten percent, sometimes much higher. Women giving birth in the Second Division, staffed by midwives, died at a rate of about four percent. Women who gave birth in the street before reaching the hospital had even lower mortality. Semmelweis spent years trying to understand why. In 1847, after the death of his colleague and friend Jakob Kolletschka from a wound infection during an autopsy, he made the connection: childbed fever was caused by cadaverous particles, infectious matter from corpses, carried from the autopsy room to the maternity ward on the hands of doctors and students who had been dissecting bodies. He introduced mandatory handwashing with a chlorinated lime solution and mortality in his ward fell dramatically. He never received the recognition his discovery deserved in his lifetime and was eventually committed to a mental institution, where he died at forty-seven, possibly from the same kind of infection his work had shown how to prevent.

"God only knows the number of patients who have gone prematurely to their graves because of me."

Karl Marx 1818-1883 · Germany / England →

Karl Marx (1818-1883) was a German economist, philosopher, historian, and political thinker whose ideas have shaped the modern world more than almost any other thinker of his century. He was born in Trier, in what was then the Prussian Rhineland. His family was Jewish — both his grandfathers had been rabbis — but his father had converted to Lutheran Christianity to be allowed to practise law. Marx grew up in a comfortable middle-class home with a good education. He studied law at the University of Bonn and then philosophy at Berlin, where he was deeply influenced by the philosophy of Hegel. He completed his doctorate in 1841. He could not become a university professor because of his radical views, so he turned to journalism. As editor of a Rhineland newspaper, he began writing on political and economic questions. The Prussian authorities soon shut the paper down. In 1843 he married his childhood sweetheart Jenny von Westphalen and moved to Paris, where he met Friedrich Engels in 1844. The two men would remain close friends and intellectual partners for the rest of Marx's life. Engels, whose family owned textile factories, gave Marx direct knowledge of industrial conditions and later supported him financially for many years. In 1848 Marx and Engels published The Communist Manifesto. Revolutions broke out across Europe that same year. Marx was expelled from several countries before settling in London in 1849. He lived there for the rest of his life, working in the British Museum reading room and writing his great book Capital — the first volume of which was published in 1867. He worked in great poverty for much of this period, losing several children to the diseases of poverty and depending heavily on Engels's financial help. He helped found the International Working Men's Association in 1864, which brought together socialists and labour activists from many countries. He died in London in 1883 at the age of sixty-four. Engels edited and published the remaining volumes of Capital after his death. Marx's influence has been enormous and contested. Movements calling themselves Marxist transformed whole societies in the twentieth century, with results both remarkable and, in some cases, catastrophic. His work itself remains a reference point for anyone trying to understand capitalism, class, and modern history.

"The philosophers have only interpreted the world, in various ways; the point, however, is to change it."

Florence Nightingale 1820-1910 · England, United Kingdom →

Florence Nightingale (1820-1910) was a British nurse, statistician, and public health reformer. She was born into a wealthy English family and received an unusually thorough education for a woman of her time. Against fierce opposition from her family, who expected her to marry and manage a household, she pursued nursing, which was then a low-status occupation associated with poor and uneducated women. In 1854, during the Crimean War, she was sent with a team of nurses to the British military hospital at Scutari in present-day Istanbul, where she found conditions of horrifying neglect: thousands of soldiers were dying not from their wounds but from infectious diseases caused by overcrowding, poor sanitation, inadequate ventilation, and contaminated water. Over the following months she organised the care of the hospital, improved sanitation, and gathered careful data on the causes of death. After the war she spent the rest of her life, largely working from a sickbed due to a chronic illness she contracted in the Crimea, transforming nursing, hospital design, and public health through evidence-based argument and systematic use of statistics. She died in 1910 aged ninety.

"The very first requirement in a hospital is that it should do the sick no harm."

Rudolf Virchow 1821-1902 · Germany →

Rudolf Virchow (1821-1902) was a German physician, pathologist, anthropologist, and politician. He was born in Schivelbein in Pomerania, now part of Poland, and studied medicine in Berlin. He became one of the most important scientists of the nineteenth century, founding modern cellular pathology through his demonstration that all disease originates in the malfunction of cells, and that all cells come from pre-existing cells. He also made significant contributions to anthropology, archaeology, and public health. As a politician, he served for many years in the Berlin City Council and in the Prussian parliament and the German Reichstag, where he was a prominent liberal opponent of Bismarck. He used his political position to advocate for sanitary reform, improved housing, clean water supplies, and public health infrastructure. He famously declared that medicine is a social science, and politics is nothing but medicine on a large scale. He lived until the age of eighty-one, remaining scientifically and politically active almost to the end, and died in 1902 from complications of a broken hip.

"Medicine is a social science, and politics is nothing but medicine on a large scale."

Gregor Mendel 1822-1884 · Moravia, Austrian Empire (now Czech Republic) →

Gregor Mendel (1822-1884) was an Augustinian friar, botanist, and the founder of genetics. He was born Johann Mendel in what is now the Czech Republic, in a region then part of the Austrian Empire. His family were farmers and he grew up working in the fields and learning about plants from an early age. He entered the Augustinian monastery at Brno in 1843, taking the name Gregor, and was sent to the University of Vienna, where he studied mathematics, physics, and natural history. He returned to the monastery, taught at the local high school, and devoted his spare time to a series of careful experiments on pea plants in the monastery garden. Between 1856 and 1863 he grew and analysed around ten thousand pea plants, tracking the inheritance of seven distinct traits across multiple generations. He presented his findings to the local natural history society in 1865 and published them in 1866. His paper was politely received and then essentially forgotten. He became abbot of the monastery in 1868 and spent the rest of his life in administrative work, never knowing that his discoveries would eventually be recognised as one of the foundations of modern biology. He died in 1884.

"My scientific work has brought me a great deal of satisfaction, and I am convinced that it will be appreciated before long by the whole world."

Savitribai Phule 1831-1897 · India (Maharashtra) →

Savitribai Phule (1831-1897) was an Indian teacher, poet, and social reformer who is widely recognised as the first female teacher of India and one of the founders of girls' education in the country. She was born in Naigaon, a small village in what is now the state of Maharashtra. Her family were farmers from the Mali caste — a community that faced social restrictions in the caste system but was not among the most oppressed. She was married at the age of nine to Jyotirao Phule, who was thirteen. This was normal for the time, when child marriage was widespread. What happened next was not normal. Jyotirao recognised that his young wife was intelligent and deserved an education, which was denied to almost all women and all lower-caste people in the India of that period. He began teaching her at home. She was a quick student. Within a few years she was literate in Marathi and beginning to read English. In 1848, when Savitribai was seventeen and Jyotirao was twenty-one, they opened a school for girls in Pune. This was an extraordinary act. Girls of any caste were not supposed to be educated. Lower-caste children were particularly forbidden from learning. Savitribai was the first woman in India to teach in a formal school. On her way to teach each day, people threw stones and cow dung at her. She reportedly carried a second sari so she could change when she arrived at school. The couple later opened schools for Dalit children (the community then called untouchables), a well for drinking water open to all castes at a time when lower-caste people were denied clean water, and a home for pregnant women who had been abandoned. Savitribai wrote poetry in Marathi. Her collections Kavya Phule (Poetry's Flowers, 1854) and Bavan Kashi Subodh Ratnakar (1891) are considered among the earliest examples of modern Marathi poetry. She adopted the son of a widow she had helped and raised him as her own. After Jyotirao's death in 1890, she continued their work alone. She died in 1897 while caring for patients during a plague epidemic in Pune; she caught the disease from a boy whose life she had tried to save.

"Go, get education. Be self-reliant. Be industrious."

Dmitri Mendeleev 1834-1907 · Russia →

Dmitri Ivanovich Mendeleev (1834-1907) was a Russian chemist who devised the periodic table of the elements, one of the most important organising schemes in the history of science. He was born in Tobolsk, Siberia, the youngest of what may have been as many as seventeen children. His father, a teacher of philosophy and literature, went blind and then died when Dmitri was still young; his mother kept the family going by running a glass factory. When the factory burned down, she travelled more than two thousand kilometres by horse and cart to take her gifted youngest son to St Petersburg, where she eventually placed him in what became his university. He completed his studies there and went on to postgraduate research in Heidelberg and Paris before returning to teach in St Petersburg. In 1869, while preparing a chemistry textbook, he arranged the known chemical elements in order of atomic weight and noticed that their properties repeated at regular intervals. He published his first periodic table that year. The table left gaps for elements he predicted would be discovered, with detailed forecasts of their properties; when gallium, scandium, and germanium were found in the following decades and matched his predictions, the table's power became undeniable. Mendeleev was also a practical scientist who worked on Russian oil production, agriculture, metrology, and economics. He never received the Nobel Prize, despite being nominated. He died in St Petersburg in 1907.

"The elements, if arranged according to their atomic weights, exhibit an evident periodicity of properties."

Oliver Wendell Holmes Jr. 1841-1935 · United States →

Oliver Wendell Holmes Jr. (1841-1935) was an American jurist, legal philosopher, and Associate Justice of the United States Supreme Court. He was born in Boston, Massachusetts, into one of the most distinguished intellectual families in America — his father was the poet and essayist Oliver Wendell Holmes Sr. He was educated at Harvard and served in the Union Army during the Civil War, where he was wounded three times, experiences that left him with a lifelong sense of the fragility of certainties and the cost of ideology. He practised law, taught at Harvard Law School, served on the Massachusetts Supreme Judicial Court, and was appointed to the US Supreme Court by President Theodore Roosevelt in 1902, where he served for nearly thirty years until retiring in 1932 at the age of ninety. He was one of the most influential jurists in American history. His major works include The Common Law (1881), in which he argued that the life of the law has not been logic but experience, and hundreds of opinions on the Supreme Court, including celebrated dissents in free speech cases that shaped twentieth-century First Amendment jurisprudence.

"The life of the law has not been logic; it has been experience."

Friedrich Nietzsche 1844-1900 · Germany →

Friedrich Wilhelm Nietzsche was a German philosopher, cultural critic, and classicist. He was one of the most influential and most misunderstood thinkers of the 19th century. He was born on 15 October 1844 in Röcken, a small village in Prussia. His father was a Lutheran pastor who died when Friedrich was four. His grandfather and great-grandfather were also pastors. He grew up in a household of women: his mother, sister, and two aunts. He was a brilliant student. At 24, before he had even finished his doctorate, he was offered the chair of classical philology at the University of Basel in Switzerland. He held this post for ten years. His first major book, The Birth of Tragedy (1872), was a study of Greek culture that was considered wildly unorthodox by other classical scholars. His academic career stalled. Health problems forced him to retire at 35. He spent the next decade as a wandering philosopher, moving between Switzerland, Italy, and France. He wrote his major works in this period: Thus Spoke Zarathustra (1883-1885), Beyond Good and Evil (1886), and On the Genealogy of Morality (1887). He was almost unknown during his lifetime. His books sold poorly. In January 1889, in Turin, Italy, Nietzsche collapsed in the street. He had a complete mental breakdown. He spent the last eleven years of his life in the care of his mother and then his sister, unable to work or speak coherently. He died on 25 August 1900, aged 55. After his death, his sister Elisabeth edited his unpublished notes to push them in a nationalist and antisemitic direction. She aligned his legacy with the rising German right and later with the Nazis, despite the fact that Nietzsche himself had opposed antisemitism sharply.

"God is dead. God remains dead. And we have killed him."

Millicent Fawcett 1847-1929 · United Kingdom →

Dame Millicent Garrett Fawcett was an English political activist and writer. She led the largest peaceful campaign for British women's right to vote for over twenty years. She was born on 11 June 1847 in Aldeburgh, a small town on the coast of Suffolk, England. Her father, Newson Garrett, was a successful businessman and political radical. He believed strongly in education for his daughters, which was unusual at the time. The Garrett family produced several remarkable women. Millicent's older sister Elizabeth Garrett Anderson became Britain's first qualified woman doctor. Their cousin Rhoda Garrett was a pioneer interior designer. Millicent herself married Henry Fawcett in 1867, when she was 19. He was a politician, professor of political economy at Cambridge, and blind from a shooting accident. They were intellectual partners. Their daughter Philippa later became one of the first women to score top marks in mathematics at Cambridge. Millicent's interest in women's right to vote (called 'suffrage') began very early. She attended her first suffrage meeting at age 19 in 1866, after hearing the philosopher John Stuart Mill speak on women's equality. She became active in campaigns at once. When her husband died in 1884, Millicent was 38. She turned her grief into political work. In 1897 she became leader of the National Union of Women's Suffrage Societies (NUWSS), Britain's largest peaceful suffrage organisation. She led it for 22 years. In 1918, when British women over 30 finally won the vote, she was 71. In 1928, full equal voting rights for women were achieved. She died the next year, on 5 August 1929, aged 82.

"Courage calls to courage everywhere, and its voice cannot be denied."

Anténor Firmin 1850-1911 · Haiti →

Joseph Auguste Anténor Firmin was a Haitian lawyer, politician, and pioneering anthropologist. He may be the first Black anthropologist in history. He was born on 18 October 1850 in Cap-Haïtien, in the north of Haiti, to a working-class family. Haiti had been independent for only 46 years. The country was still recovering from the revolution and from the huge payments France had demanded for recognising its freedom. Firmin was a brilliant student. He taught himself Greek, Latin, and French, which he later taught to others. He studied law and became a lawyer by 1875. He was active in liberal politics. He founded a newspaper, Le Messager du Nord, which supported reform. Political turmoil pushed him into government service and then abroad. In 1883, he was appointed Haitian ambassador to France and moved to Paris. While in Paris, a French doctor invited him to join the Société d'Anthropologie de Paris, the leading anthropology society of its day. He attended meetings regularly. But the society was dominated by racist 'scientific' theories that claimed white people were superior. Firmin sat through meeting after meeting, knowing the other members saw him as inferior. He tried to speak only twice. Both times he was cut off or insulted. So he wrote a book instead. De l'égalité des races humaines (The Equality of the Human Races) appeared in 1885. It was 662 pages long and had taken him eighteen months to write. It systematically destroyed the racist anthropology of his time. It was almost completely ignored. Firmin returned to Haiti and had a difficult political career. He served as foreign minister, ran for president twice, and led two failed revolts. He died in exile on the island of St. Thomas on 19 September 1911, aged 60. His book was only rediscovered and translated into English in 2000, 115 years after it was written.

"All human beings are endowed with the same qualities and the same faults, without distinction of colour or anatomical form. The races are equal."

Frederick Winslow Taylor 1856-1915 · United States →

Frederick Winslow Taylor (1856-1915) was an American mechanical engineer whose systematic approach to industrial work created the school of thought known as scientific management and shaped twentieth-century factory production throughout the industrialised world. He was born in Germantown, Pennsylvania, to a wealthy Quaker family. His father was a Princeton-trained lawyer, his mother a committed abolitionist and feminist. Taylor was prepared for Harvard but, suffering from severe headaches and eye strain, instead became an apprentice machinist at a pump-manufacturing works in Philadelphia in 1874. He moved to the Midvale Steel Company in 1878, where he rose rapidly from labourer to chief engineer within six years while completing a mechanical engineering degree at Stevens Institute of Technology by correspondence. At Midvale he began the detailed time studies and analyses of work processes that would become the foundation of his later theory. He moved in 1890 to the Manufacturing Investment Company, then in 1893 set up as one of the first independent management consultants. His most famous consulting engagement was at the Bethlehem Steel Company from 1898 to 1901, where he conducted studies of shovelling, pig-iron handling, and metal-cutting that became the central examples of his 1911 book The Principles of Scientific Management. He was forced out of Bethlehem in 1901 after conflicts with new management. He spent the rest of his career promoting his methods through lectures, consulting, and writing, and building a network of disciples. His ideas faced strong opposition from organised labour; the American Federation of Labor denounced his methods and Congress investigated them in 1912. He died in 1915, aged fifty-nine, bitter about the resistance his ideas had met. His influence grew rapidly after his death; by the 1920s scientific management had become a global phenomenon, adopted in factories from Detroit to Moscow.

"In the past the man has been first; in the future the system must be first."

Nikola Tesla 1856-1943 · Serbian, Austrian Empire / United States →

Nikola Tesla (1856-1943) was an electrical engineer and inventor whose work on alternating current, induction motors, and wireless power transmission helped shape the modern electrical infrastructure of the world. He was born to an ethnic Serbian family in Smiljan, a village in the Military Frontier of the Habsburg Empire, in what is now Croatia. His father was a Serbian Orthodox priest, his mother an unschooled woman with a remarkable memory and a gift for making household tools. Tesla studied engineering at the Polytechnic in Graz and briefly at the University of Prague, though he did not complete a formal degree. He worked in Budapest and Paris before emigrating to the United States in 1884. He worked briefly for Thomas Edison in New York, then set out on his own. In 1888 he patented a practical alternating current induction motor and a polyphase power system; these patents were acquired by George Westinghouse, and the system they made possible became the backbone of modern electrical power distribution. During the 1890s Tesla also demonstrated wireless lighting, developed the Tesla coil, and experimented with the transmission of energy through the atmosphere. His later career was marked by increasingly ambitious and often impractical projects, financial difficulties, and growing eccentricity. He died alone and nearly forgotten in a New York hotel in 1943, aged eighty-six. His reputation has been rebuilt in the decades since, though not always with the precision his work deserves.

"The present is theirs; the future, for which I really worked, is mine."

Sigmund Freud 1856–1939 · Austria / Czech Republic →

Sigmund Freud (1856–1939) was an Austrian neurologist and the founder of psychoanalysis — one of the most influential and contested intellectual movements of the 20th century. Born into a Jewish family in Moravia (now the Czech Republic), he spent most of his life in Vienna, where he developed his theories about the unconscious mind, dream interpretation, and the psychological origins of mental illness. He was forced to flee Vienna in 1938 when the Nazis annexed Austria and died in London the following year. His ideas transformed not only psychiatry and psychology but also literature, art, anthropology, philosophy, and popular culture. Almost every time someone speaks of repression, the unconscious, denial, or a Freudian slip, they are using concepts he introduced.

"The interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind."

Ferdinand de Saussure 1857-1913 · Switzerland →

Ferdinand de Saussure (1857-1913) was a Swiss linguist whose ideas about language changed how people study not only language but many other fields as well. He was born in Geneva into a distinguished family of scientists and scholars. His father was a naturalist; several of his relatives had made important contributions to mathematics and science. Ferdinand showed an early talent for languages. As a teenager he had already studied Greek, Latin, German, English, French, and Sanskrit. He went to university first in Geneva and then in Leipzig, Germany, which was then the leading centre for the study of language. In 1878, at the age of only twenty-one, he published a book on the vowel system of ancient Indo-European languages that impressed scholars across Europe. His career then developed in an unusual way. He taught in Paris for ten years and then returned to Geneva, where he spent the rest of his working life. He published very little. He found it difficult to finish books, partly because he kept changing his mind and partly because he had a perfectionism about his ideas. Between 1907 and 1911 he gave three courses of lectures on general linguistics at the University of Geneva. These were the most important lectures he ever gave, but he did not write them up himself. When he died in 1913, at age fifty-five, few of his most radical ideas had been published. After his death, two of his students — Charles Bally and Albert Sechehaye — worked from their own notes and the notes of other students to produce the Course in General Linguistics, which was published in 1916. This book contained ideas that reshaped how people study language and also influenced anthropology, literary criticism, and philosophy. The book that made Saussure famous is therefore not really his book. It was created by his students from their memories of what he had said. Later researchers have studied Saussure's own manuscripts and found that the book does not perfectly capture his views. The real Saussure is more complex than the book suggests, but the book remains one of the most influential works in the study of language.

"In language there are only differences."

Thorstein Veblen 1857-1929 · United States →

Thorstein Veblen was an American economist and social thinker. He was born in 1857 in Wisconsin and died in 1929. His parents were immigrants from Norway, and he grew up in a Norwegian-speaking farming community in the American Midwest. He did not speak English easily until he was a teenager. Veblen was always an outsider. He was a brilliant but awkward student. He studied at several universities and earned a doctorate in philosophy, but he struggled for years to find steady academic work. When he did teach, he was an odd and difficult colleague. He was a poor lecturer, mumbled, and ignored normal university rules. He moved from job to job, never holding a senior post. He was also an outsider in his personal life, with a messy private life that scandalised the universities of his time and cost him jobs. Despite this difficult career, Veblen wrote books that shook economics. His first and most famous, 'The Theory of the Leisure Class', appeared in 1899. It was a sharp, witty study of how rich people use spending to show off their status. Later books attacked the whole way business and industry worked. Veblen died poor and largely alone in 1929, just before the Great Depression seemed to confirm many of his warnings about the instability of business-driven economies.

"Conspicuous consumption of valuable goods is a means of reputability to the gentleman of leisure."

Franz Boas 1858-1942 · Germany / United States →

Franz Boas (1858-1942) was a German-American anthropologist, widely regarded as the founder of modern cultural anthropology. He was born in Minden, Westphalia, into a secular Jewish family with strong liberal values. He studied physics and geography at German universities, completing his doctorate in 1881. A field expedition to Baffin Island in the Canadian Arctic in 1883, where he spent a winter studying the Inuit people, transformed his intellectual orientation: he became convinced that geography and environment could not explain the enormous variety of human cultures and that culture had to be understood on its own terms. He emigrated to the United States in 1887, eventually becoming a professor at Columbia University in New York, where he spent most of his career. He became the most influential figure in American anthropology, training a generation of students who went on to transform the discipline — including Margaret Mead, Ruth Benedict, Zora Neale Hurston, and many others. He was a lifelong anti-racist and used his scientific authority to challenge the racial pseudo-science that was used to justify immigration restriction, colonialism, and eventually Nazism. He died in 1942, reportedly collapsing mid-conversation at a dinner where he had been speaking about racism.

"The mind of man is the same the world over."

Émile Durkheim 1858-1917 · France →

Émile Durkheim (1858-1917) was a French scholar who is widely regarded as one of the founders of modern sociology. He was born in Épinal, in the Lorraine region of north-eastern France, into a Jewish family. His father, grandfather, and great-grandfather had all been rabbis, and his family expected him to follow this path. As a young man he turned away from religious study but remained deeply interested in why religion mattered to societies. He studied at the prestigious École Normale Supérieure in Paris, where his classmates included the philosopher Henri Bergson and the socialist leader Jean Jaurès. He did not immediately find his direction. Early teachers found him brilliant but hard to place. He taught philosophy at several secondary schools while developing his own approach to studying society. In 1887 he became a professor at the University of Bordeaux, where he taught the first sociology course in a French university. He moved to the Sorbonne in Paris in 1902, where he taught for the rest of his life. He founded one of the first major sociology journals, L'Année Sociologique, which brought together a group of brilliant young scholars — his nephew Marcel Mauss, the philosopher Maurice Halbwachs, and others — who became known as the Durkheimian school. His major books include The Division of Labour in Society (1893), The Rules of Sociological Method (1895), Suicide (1897), and The Elementary Forms of Religious Life (1912). Each became foundational for a different area of sociology. He was a passionate patriot who believed sociology could help France become a more just and integrated society. The First World War devastated him. His son André was killed at the Front in 1915, and many of his brightest students died in the trenches. He never recovered from these losses. He died in Paris in 1917 at the age of fifty-nine, two years after his son's death. His influence on sociology has been enormous. His work has shaped how the field studies religion, education, crime, suicide, work, and the relationships between individuals and the societies they live in.

"A social fact is any way of acting, whether fixed or not, capable of exerting over the individual an external constraint."

Edmund Husserl 1859-1938 · Austria-Hungary / Germany →

Edmund Husserl was a German philosopher. He is the founder of phenomenology, one of the most important schools of twentieth-century thought. He was born on 8 April 1859 in Prossnitz, a town in Moravia, then part of the Austrian Empire (today Prostějov in the Czech Republic). His family was Jewish and middle class. They spoke German rather than Czech. His father ran a business. As a young man, he studied mathematics in Leipzig, Berlin, and Vienna. He earned a doctorate in mathematics in 1883. He could have had a career as a mathematician. But he became interested in deeper questions: what does it mean to know something? What are the foundations of mathematics itself? In 1884, he attended lectures by the philosopher Franz Brentano in Vienna and was so impressed that he switched to philosophy. He taught at the University of Halle from 1887. In 1891 he published Philosophy of Arithmetic. The mathematician Gottlob Frege criticised it sharply. The criticism pushed Husserl in new directions. In 1900-1901 he published Logical Investigations, the work that founded phenomenology. He taught at Göttingen from 1901 to 1916, then at Freiburg from 1916 to 1928. Many of the most important philosophers of the twentieth century were his students or were shaped by his work. In 1933 the Nazis came to power. Although Husserl had converted to Lutheran Protestantism in 1887, the Nazi racial laws still classified him as Jewish. He was banned from his own university library. He died on 27 April 1938 in Freiburg, aged 79.

"To the things themselves."

John Dewey 1859-1952 · United States →

John Dewey was an American philosopher, psychologist, and educator. He was one of the most important thinkers in the United States during the first half of the twentieth century. He was born on 20 October 1859 in Burlington, Vermont. He studied at the University of Vermont and then earned a PhD in philosophy at Johns Hopkins University in 1884. He taught first at the University of Michigan. In 1894 he moved to the new University of Chicago. In 1896 he founded the Laboratory School there. This was a small school where his new ideas about learning could be tested with real children. During his Chicago years he became close to Jane Addams at Hull House. The two thinkers shaped each other's ideas about democracy. After a dispute with the university, he resigned in 1904. He moved to Columbia University in New York, where he stayed until his retirement in 1930. At Columbia he wrote most of his major books. These included Democracy and Education (1916), Experience and Nature (1925), The Public and Its Problems (1927), and Art as Experience (1934). He travelled widely. He spent more than two years in China (1919-1921), where he gave famous lectures. He also visited Japan, Turkey, Mexico, and the Soviet Union. In 1937 he led a public inquiry into Stalin's charges against Leon Trotsky. He helped found the NAACP, a major American civil rights organisation. He wrote over forty books and around a thousand articles. He died on 1 June 1952, aged 92.

"Education is not preparation for life; education is life itself."

Jane Addams 1860-1935 · United States →

Jane Addams was an American sociologist, social reformer, and peace activist. She is one of the founders of American sociology, though she was left out of its history for many years. She was born on 6 September 1860 in Cedarville, Illinois. Her family was wealthy by local standards. Her father was a businessman and a friend of Abraham Lincoln. Her mother died when Jane was two. She studied at Rockford Female Seminary, graduating in 1881. She hoped to become a doctor but her health was fragile. For several years in her twenties, she felt lost. Women of her class were expected to marry and run a home, but she wanted something more meaningful. In 1887 she travelled to Europe with her close friend Ellen Gates Starr. In London they visited Toynbee Hall, a new kind of place where educated people lived among the poor and worked with them. They decided to do something similar in America. In 1889, they opened Hull House in a poor immigrant neighbourhood of Chicago. Hull House gave adult education, childcare, art classes, English lessons, and a safe meeting place for workers and reformers. It became the most famous settlement house in America. Addams lived there for the rest of her life. She wrote eleven books and hundreds of articles. She campaigned for women's right to vote, workers' rights, and peace. She opposed America's entry into the First World War. In 1931, she became the first American woman to win the Nobel Peace Prize. She died on 21 May 1935, aged 74.

"The good we secure for ourselves is precarious and uncertain until it is secured for all of us and incorporated into our common life."

Rabindranath Tagore 1861-1941 · Bengal, India / South Asia →

Rabindranath Tagore (1861-1941) was an Indian poet, philosopher, and educator from Bengal, a region now divided between India and Bangladesh. He was born into a wealthy and intellectually active family in Kolkata and grew up surrounded by art, music, literature, and philosophical discussion. He began writing poetry as a child and became one of the most celebrated writers in the Bengali language, producing poetry, short stories, novels, plays, songs, and essays throughout his long life. In 1913 he became the first non-European to receive the Nobel Prize in Literature. He also composed the national anthems of both India and Bangladesh, the only person to have composed the national anthem of two countries. But he was not only a writer. He founded an experimental school at Santiniketan in 1901 that was built on his philosophy of education: learning through nature, creativity, and joy rather than through rigid discipline and examination. He was deeply engaged with political questions including Indian independence, but he was also a sharp critic of nationalism, which he saw as a dangerous force. He travelled widely across Europe, Asia, and the Americas and believed deeply in the possibility of genuine dialogue between cultures.

"The highest education is that which does not merely give us information but makes our life in harmony with all existence."

Vladimir Vernadsky 1863-1945 · Russian Empire / Soviet Union (Ukrainian descent, founded Ukrainian Academy of Sciences) →

Volodymyr Ivanovych Vernadsky (in Russian: Vladimir Ivanovich Vernadsky) was a mineralogist, geochemist, and philosopher of science. He helped found three modern scientific disciplines: geochemistry, biogeochemistry, and radiogeology. He was born in 1863 in Saint Petersburg, the capital of the Russian Empire. His father, Ivan Vernadsky, came from a Ukrainian Cossack family and had been a professor of political economy in Kyiv before moving to Saint Petersburg. His mother was a Russian noblewoman. Vernadsky himself spent much of his childhood in Ukraine and considered himself Ukrainian by descent. He studied natural sciences at the University of Saint Petersburg, then did postgraduate work in mineralogy and crystallography in Italy and France, including study under leading European chemists. He returned to Russia and built one of the first geochemistry research programmes in the world. He read widely across science and philosophy and corresponded with major scientists across Europe, including Marie Curie. His political life was complicated. He was a liberal in tsarist Russia, a member of the constitutional democratic party, and briefly served in a 1917 provisional government. After the Bolshevik revolution, he chose to stay in Soviet science. In 1918 he played a leading role in founding the Ukrainian Academy of Sciences in Kyiv and became its first president. He published his most important work, The Biosphere, in 1926. He continued to lead Soviet scientific institutions until his death in Moscow in 1945, aged 81. His ideas about the biosphere and the noosphere have shaped modern environmental science.

"Life is not just present on Earth's surface. Life is a planetary force."

Max Weber 1864-1920 · Germany →

Max Weber (1864-1920) was a German sociologist who wrote about religion, politics, economics, and the nature of modern society. He was born in Erfurt, in central Germany, into a prosperous middle-class Protestant family. His father was a lawyer and National Liberal politician who enjoyed public life. His mother was a devout Calvinist with strong moral convictions. The clash between his father's worldly ambition and his mother's religious seriousness shaped Weber from childhood. He was an extraordinarily serious student who read law, economics, philosophy, and history at the universities of Heidelberg, Berlin, and Göttingen. He completed his doctorate in 1889 on medieval trading companies and his second doctorate in 1891 on Roman agrarian history. In 1893 he married his cousin Marianne Schnitger, who became a notable sociologist and feminist in her own right and would later edit and promote his work. In his early thirties he seemed set for a great academic career. He became a professor at Freiburg in 1894 and at Heidelberg in 1896. But in 1897, after a violent argument with his authoritarian father — who died shortly afterwards — Weber suffered a severe mental breakdown. For several years he could not read or teach. He took leave from his professorship and spent long periods travelling to recover. Though he regained his capacity for work, he never returned to regular teaching. Instead he wrote intensively from private life for nearly two decades. His major works come mostly from this period. The Protestant Ethic and the Spirit of Capitalism (1904-1905) is his most famous book. Economy and Society, an enormous unfinished work on the structure of social life, was edited and published by Marianne after his death. He also wrote major studies on the religions of China and India, on ancient Judaism, on the city, and on politics. He briefly returned to teaching at the end of his life — at Vienna in 1918 and Munich in 1919. He died in Munich in 1920 at the age of fifty-six, probably from the Spanish flu pandemic. His influence has grown continuously since his death. His work is now studied worldwide as foundational for sociology, political science, and the study of religion.

"The fate of our times is characterised by rationalisation and intellectualisation, and, above all, by the disenchantment of the world."

Wassily Kandinsky 1866-1944 · Russia / Germany / France →

Wassily Kandinsky (1866-1944) was a Russian painter and art theorist usually credited as one of the pioneers of abstract painting in the European tradition. He was born in Moscow to a prosperous tea-trading family and spent his early childhood in the southern Russian port of Odessa. He studied law and economics at Moscow University and was preparing for an academic career when, at thirty, he decided to abandon it and become a painter. He moved to Munich in 1896 and trained at the city's art academy. Over the following decade he developed from a competent painter of folk-inflected landscapes into a theorist and practitioner of a new kind of painting that dispensed with recognisable subjects. In 1910 he painted what is often regarded as one of the earliest purely abstract works, a watercolour that broke decisively with representation. He co-founded the Blue Rider group in Munich in 1911, published his major theoretical work Concerning the Spiritual in Art that same year, and played a central role in the artistic ferment of the years before the First World War. He returned to Russia during the war, worked in the cultural institutions of the early Soviet period, and came back to Germany in 1921 to teach at the Bauhaus. When the Nazis closed the Bauhaus in 1933, he moved to Paris, where he lived until his death in 1944. He was married twice and had a long partnership with the painter Gabriele Münter during his Munich years.

"Colour is a power which directly influences the soul."

Marie Curie 1867–1934 · Warsaw, Poland / Paris, France →

Marie Curie (1867–1934) was a physicist and chemist born in Warsaw, Poland, at a time when Poland was occupied by Russia and women were barred from higher education. She moved to Paris to study science, earned degrees in both physics and mathematics, and went on to become the most celebrated scientist of her era. She discovered two elements — polonium and radium — developed the theory of radioactivity, and won the Nobel Prize twice: in Physics in 1903 and in Chemistry in 1911. She remains the only person ever to win the Nobel Prize in two different sciences. She died of aplastic anaemia caused by her lifelong exposure to radiation — a danger she helped to discover but could not protect herself against.

"Nothing in life is to be feared, it is only to be understood."

Mary Parker Follett 1868-1933 · United States →

Mary Parker Follett (1868-1933) was an American political philosopher and management thinker whose ideas about authority, conflict, and organisation anticipated much of the later twentieth century's humanistic approach to management. She was born in Quincy, Massachusetts, to a family of modest means. Her father, a Civil War veteran, died when she was young; her mother became an invalid, and Follett took on significant family responsibilities while still a student. She studied at the Annex — which later became Radcliffe College — at Cambridge University, and in Paris, focusing on history, political economy, and philosophy. Her first major book, The Speaker of the House of Representatives, appeared in 1896 and remains a standard work on the history of that institution. She worked for decades in community organising, founding evening recreation centres and other services in Boston's poorer neighbourhoods and serving on various committees on industrial and social questions. Her experience in community work brought her into contact with real problems of coordinating people with different interests toward common ends, and she drew on this experience to develop her later writings on management and organisation. The New State (1918) and Creative Experience (1924) argued for a democracy based on the integrating of differences rather than on majority rule. In the late 1920s she was invited to lecture to business audiences in the United States and England, and these lectures — posthumously collected as Dynamic Administration — made her reputation as a management thinker. She died in Boston in 1933. Her work was largely forgotten during the mid-twentieth century but has been rediscovered since the 1970s as the fields she influenced caught up with her.

"Power is with, not power over."

W.E.B. Du Bois 1868-1963 · United States →

W.E.B. Du Bois (1868-1963) was an American sociologist, historian, civil rights activist, and one of the most important intellectual figures of the twentieth century. His full name was William Edward Burghardt Du Bois. He was born in Great Barrington, Massachusetts, into a small free Black community in the North, and showed exceptional academic ability from childhood. He became the first African American to receive a doctorate from Harvard University, in 1895, and also studied at the University of Berlin. He spent his long career at the intersection of scholarship and activism, writing groundbreaking works of sociology and history, co-founding the National Association for the Advancement of Colored People (NAACP), editing the influential journal The Crisis for many years, and eventually, in his final years, joining the Communist Party of America and emigrating to Ghana, where he died in 1963 at the age of ninety-five, on the eve of the March on Washington. His most important works include The Souls of Black Folk (1903), Black Reconstruction in America (1935), and The Philadelphia Negro (1899).

"The problem of the twentieth century is the problem of the colour line."

Kitaro Nishida 1870–1945 · Japan →

Kitaro Nishida (1870–1945) was a Japanese philosopher and the founder of what is known as the Kyoto School — the first major tradition of Japanese philosophy to engage systematically with Western philosophy on equal terms while remaining rooted in East Asian thought. He spent most of his career at Kyoto University, where he developed a highly original philosophical system that brought together Zen Buddhist concepts of experience and nothingness with European traditions including Hegel, Kant, William James, and Husserl. His most famous work, An Inquiry into the Good (1911), is the founding text of modern Japanese philosophy and one of the most important philosophical works produced outside the Western tradition in the 20th century.

"At the base of our existence, there must be something that unifies the opposition of subject and object."

Maria Montessori 1870-1952 · Italy →

Maria Montessori (1870-1952) was an Italian educator and doctor whose method of teaching young children has spread to thousands of schools around the world. She was born in Chiaravalle, in central Italy, to a middle-class family. Her father worked for the government; her mother was well-read and encouraged Maria's ambitions. At that time, few women in Italy went to university. Maria wanted to study medicine, which was almost impossible for a woman. She faced strong opposition but did not give up. She entered the University of Rome in 1890 and became one of the first women in Italy to earn a medical degree, graduating in 1896. Her early work as a doctor focused on children with learning difficulties. She worked at a clinic in Rome where she observed these children closely and developed teaching materials that helped them learn. When many of her students then passed the same state exams as children without special needs, she began to wonder whether her methods might work for all children. In 1907 she opened her first school, the Casa dei Bambini (Children's House), in a poor neighbourhood of Rome. The children were aged between three and seven. The results surprised everyone. Children who had been thought wild or undisciplined became focused, calm, and eager to learn. News of the school spread rapidly. Within a few years, schools using her methods opened across Europe, then in the United States and Asia. She wrote many books, including The Montessori Method (1909) and The Absorbent Mind (1949). She was nominated three times for the Nobel Peace Prize because of her work on education for peace. During the Second World War she was trapped in India for seven years, where she continued teaching and developed her ideas about the education of older children. She died in the Netherlands in 1952 at the age of eighty-one. Her schools now educate more than a million children in more than a hundred countries.

"Never help a child with a task at which he feels he can succeed."

Vladimir Lenin 1870-1924 · Russian Empire / Soviet Union →

Vladimir Ilyich Lenin was a Russian revolutionary and political theorist. He led the October Revolution of 1917 and founded the Soviet Union, the world's first communist state. His real name was Vladimir Ulyanov. He took the name Lenin around 1901. He was born on 22 April 1870 in Simbirsk, a town on the Volga river. His family was educated and middle class. His father was a school inspector who had risen into the Russian nobility. Two family events shaped him. In 1886 his father died. The next year, his older brother Alexander was hanged for taking part in a plot to kill Tsar Alexander III. Lenin was seventeen. He kept his brother's revolutionary commitment but rejected terrorism as a method. He turned to Marxism, a theory developed by Karl Marx, who argued that workers would eventually overthrow capitalism. Lenin trained as a lawyer but spent most of his life as a full-time revolutionary. He was arrested in 1895 and exiled to Siberia. In 1900 he moved to Western Europe, where he lived for most of the next seventeen years. He edited newspapers and wrote major books. In 1902 he published What Is to Be Done?, arguing for a small, disciplined revolutionary party. In April 1917, after the Tsar fell, he returned to Russia. His Bolshevik party seized power in the October Revolution. He led the new Soviet state through civil war, famine, and foreign intervention. A series of strokes from 1922 left him unable to work. He died on 21 January 1924, aged 53. His body is still on display in Red Square in Moscow.

"Peace, Land, Bread."

Lesya Ukrainka 1871-1913 · Ukraine (Russian Empire) →

Lesya Ukrainka was a Ukrainian poet, dramatist, essayist, and political activist. She is widely regarded as the greatest Ukrainian woman writer and one of the foremost Ukrainian writers of any gender. Her real name was Larysa Petrivna Kosach. She was born in 1871 in Novohrad-Volynskyi, in what is now western Ukraine. The pen name 'Lesya Ukrainka' (Lesya the Ukrainian) was given to her by her mother and made a clear political statement: at a time when Russian imperial law banned publication in Ukrainian, naming yourself after your forbidden country was an act of resistance. Her family were intellectuals and Ukrainian patriots. Her mother, Olha Drahomanova-Kosach, was a writer who published as Olena Pchilka. Her father was a lawyer and landowner who funded Ukrainian-language publications out of his own pocket. Lesya and her siblings were educated at home in Ukrainian, which was forbidden in schools. She was an extraordinary student, eventually fluent in over a dozen languages including Ukrainian, Russian, Polish, German, French, English, Italian, Latin, and Greek. At the age of twelve she contracted tuberculosis, which attacked her bones and later her lungs and kidneys. She suffered constant pain for the rest of her life. The disease made her dream of being a concert pianist impossible. It also took her abroad constantly: to Germany, Italy, Egypt, Crimea, Georgia, and the Caucasus, in long searches for cures that did not work. She wrote constantly through pain. She died in Surami, Georgia, in 1913, aged 42. Her body was returned to Kyiv. Russian police banned speeches at her funeral. Six women carried her coffin in protest.

"Without hope, I will hope."

Albert Einstein 1879-1955 · Germany / United States →

Albert Einstein was a German-born theoretical physicist. He is widely seen as the most influential scientist of the twentieth century. He was born on 14 March 1879 in Ulm, in southern Germany. His family was secular Jewish and middle class. His father ran an electrochemical business that often struggled. His mother was a musician who pushed Albert to play the violin from age five. He had one younger sister, Maja. As a child, he was shy and slow to speak, but fascinated by science. A compass given to him at age five made him wonder about invisible forces. He found regular school dull. At sixteen he ran away from his German school. He finished his education in Switzerland and entered the Swiss Federal Polytechnic School in Zurich in 1896. He graduated in 1900. He could not find a teaching post and took a job at the Swiss Patent Office in Bern. There, in his spare time, he produced his most famous work. In 1905, his 'miracle year', he published four papers that changed physics: on the photoelectric effect, Brownian motion, special relativity, and the equation E=mc². Fame followed slowly. He held professorships in Zurich, Prague, and Berlin. In 1915 he completed the general theory of relativity. He won the Nobel Prize in Physics for 1921. In 1933, the Nazis came to power. Einstein, who was Jewish, was already in the United States and never returned to Germany. He took a position at the Institute for Advanced Study in Princeton, where he worked until his death on 18 April 1955, aged 76.

"Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."

Mustafa Kemal Atatürk 1881-1938 · Ottoman Empire / Republic of Turkey →

Mustafa Kemal Atatürk was the founder and first president of the Republic of Turkey. He was born in 1881 in Salonica (now Thessaloniki, Greece), then a thriving Ottoman port. His birth name was simply Mustafa. He earned the additional name Kemal, meaning 'the perfect one', from a mathematics teacher at his secondary school. He was given the surname Atatürk, meaning 'Father of the Turks', by the Turkish parliament in 1934 when surnames became compulsory under his reforms. He was a career military officer in the late Ottoman army. He fought in Libya against Italy in 1911-1912 and in the Balkan Wars in 1912-1913. He became famous internationally for his successful defence of the Gallipoli peninsula against Allied forces in 1915 during the First World War. He was an Ottoman general by the war's end. When the Allies began partitioning the defeated Ottoman Empire, Mustafa Kemal organised an armed nationalist resistance from Anatolia. He won the Turkish War of Independence (1919-1923) against Greek, Armenian, French, and British forces, in a war that also included the ethnic cleansing of Armenians, Greeks, and other minorities from much of Anatolia. He abolished the Ottoman Sultanate in 1922 and proclaimed the Republic of Turkey on 29 October 1923, becoming its first president. From then until his death he led an extraordinary programme of reforms: the abolition of the caliphate, the secularisation of law and education, the replacement of Arabic script with Latin alphabet, women's suffrage, civil marriage and divorce, monogamy, and the comprehensive Westernisation of dress, names, and public life. He governed through a single-party state. He died at Dolmabahçe Palace in Istanbul on 10 November 1938 of cirrhosis of the liver. He was 57.

"Peace at home, peace in the world."

Emmy Noether 1882-1935 · Germany (later United States) →

Emmy Noether was a German mathematician who changed how we understand algebra and physics. She was born in 1882 in Erlangen, Germany. Her father was a mathematics professor. At the time, women were not allowed to study at German universities as full students. She had to sit in on classes without being officially enrolled. She finished her doctorate in 1907, but she could not get a paid teaching job because she was a woman. In 1915, the famous mathematician David Hilbert invited her to the University of Göttingen. He tried to get her a proper position. The university refused. For years, she had to teach under Hilbert's name and received no pay. She did not complain. She just kept doing brilliant work. Her ideas were so new that many people did not understand them at first. She worked on abstract algebra. This is a part of mathematics that studies the structure behind numbers and shapes. She also helped Einstein with his theory of general relativity. In 1933, the Nazis came to power and forced her out of her job because she was Jewish. She moved to the United States and taught at Bryn Mawr College in Pennsylvania. She died there in 1935, aged only 53, after surgery went wrong.

"My methods are really methods of working and thinking; this is why they have crept in everywhere anonymously."

James Joyce 1882-1941 · Ireland →

James Joyce was an Irish writer. He is seen as one of the most important novelists of the twentieth century. He was born in 1882 in Dublin, the capital of Ireland. He died in 1941 in Zurich, Switzerland. Joyce grew up in a large family. His father was charming but bad with money, and the family slowly became poorer. Joyce was clever and well educated, first by Jesuit priests and then at university in Dublin. He loved languages and learned several. As a young man, Joyce left Ireland. He felt the country was too narrow for him, and too controlled by the Catholic Church and by politics. He spent most of his life abroad, in cities such as Trieste, Zurich, and Paris. He often had little money and worked partly as a language teacher. Yet Joyce almost always wrote about Dublin. He wrote about the city and its people in great, exact detail, even from far away. His main works are a story collection, 'Dubliners', a novel called 'A Portrait of the Artist as a Young Man', and two long, difficult, famous novels: 'Ulysses' and 'Finnegans Wake'. His eyesight was poor for much of his life, and he wrote through real physical struggle.

"Joyce once said that if Dublin were destroyed, it could be rebuilt from the pages of his books."

Virginia Woolf 1882-1941 · England →

Virginia Woolf was an English novelist, essayist, and literary critic. She is one of the most important writers of the 20th century. She was born Adeline Virginia Stephen on 25 January 1882 in London. Her father, Leslie Stephen, was a famous editor and critic. Her mother, Julia, was a model for pre-Raphaelite painters. The household was full of books and writers. It was also full of suffering. Virginia's mother died when she was 13. Her half-sister died two years later. Her father died when she was 22. She had her first serious mental breakdown after each of these losses. She was taught at home. Unlike her brothers, she was not sent to school or university. She later wrote sharply about this unequal education. She read everything in her father's library. She began writing as a young woman. After her father's death, she moved with her siblings to the Bloomsbury area of London. There she was part of a circle of writers, artists, and thinkers known as the Bloomsbury Group. They believed in honest talk, personal freedom, and taking art seriously. In 1912, she married Leonard Woolf, a writer and political thinker. Together, in 1917, they founded the Hogarth Press, which published her own books and those of other important writers, including T.S. Eliot and translations of Freud. Her major novels appeared between the two world wars: Mrs Dalloway (1925), To the Lighthouse (1927), Orlando (1928), The Waves (1931), and Between the Acts (1941). She also wrote important essays: A Room of One's Own (1929) and Three Guineas (1938). She suffered from serious mental illness throughout her life. Her letters and diaries describe periods of depression and what was then called 'madness'. As the Second World War threatened England, and with Germany bombing London, her mental state worsened. On 28 March 1941, she filled her coat pockets with stones and walked into the River Ouse near her home in Sussex. She was 59. Her suicide note to Leonard said she could not face another breakdown.

"A woman must have money and a room of her own if she is to write fiction."

John Maynard Keynes 1883–1946 · Cambridge, England →

John Maynard Keynes (1883–1946) was a British economist whose ideas changed the way governments manage their economies. He grew up in Cambridge, England, studied mathematics and philosophy, and became one of the most influential thinkers of the 20th century. He worked as a civil servant, an academic, a journalist, and an adviser to the British government during two world wars. His most important book, The General Theory of Employment, Interest and Money, published in 1936, argued that governments should actively manage their economies rather than leaving everything to the market. His ideas shaped the economic policies of most democratic countries for decades after the Second World War and remain central to economic debate today.

"In the long run we are all dead."

Halide Edib Adıvar 1884-1964 · Ottoman Empire / Republic of Turkey →

Halide Edib Adıvar was a Turkish novelist, feminist political leader, soldier, and public intellectual. She is widely regarded as the founding mother of the modern Turkish novel and one of Turkey's most important twentieth-century writers. She was born in Istanbul in 1884 to an upper-class Ottoman family. Her father was a secretary to Sultan Abdülhamid II. The family was associated with the Dönmeh, a community of seventeenth-century Jewish converts to Islam who maintained some Sabbatean traditions privately. She was educated at home by tutors in Ottoman and European literature, religion, philosophy, sociology, piano, English, French, and Arabic, and briefly attended the American College for Girls in Istanbul. She began writing journalism and fiction in her early twenties. She divorced her first husband in 1910 when he took a second wife, an unusual act of defiance against polygamy in late Ottoman society. She married the politician and physician Adnan Adıvar in 1917. During the Turkish War of Independence (1919-1923) she became one of the movement's most powerful voices: she addressed the famous Sultanahmet rally in 1919 against Greek occupation, then went to Anatolia to join Mustafa Kemal's nationalist forces. She served as a corporal and later as a sergeant-major, working as a press officer and translator. She wrote about the war in The Turkish Ordeal. Her relationship with Mustafa Kemal soured after independence. As his single-party regime tightened, she and her husband went into exile in Britain and France in 1926. She did not return to Turkey for fourteen years. She wrote extensively in English during exile, including her two-volume Memoirs (1926, 1928). She returned to Turkey in 1939, served as the first woman professor at Istanbul University from 1940 to 1950, and was elected to the National Assembly from 1950 to 1954. She died in Istanbul on 9 January 1964.

"We Turks have lost so much. We must not also lose our self-respect."

Chester Barnard 1886-1961 · United States →

Chester Irving Barnard (1886-1961) was an American business executive whose book The Functions of the Executive (1938) became one of the foundational works of mid-twentieth-century organisational theory, produced by a practising businessman rather than by an academic. He was born in Malden, Massachusetts, to a family of modest means. His mother died when he was five; he was raised partly by grandparents. He attended Mount Hermon School, working to support himself, then won a scholarship to Harvard University in 1906, where he studied economics and philosophy. He left Harvard in 1909 without completing his degree, having refused to take a required laboratory course, and joined the American Telephone and Telegraph Company as a statistician. He stayed with AT&T or its subsidiaries for most of his working life. He rose to become president of the New Jersey Bell Telephone Company in 1927 and held that position until 1948. He combined his business career with substantial reading in philosophy, sociology, and psychology, drawing on thinkers from Vilfredo Pareto to Alfred North Whitehead. In the 1930s he was invited to give a series of lectures at Harvard, which became The Functions of the Executive. He also served on many public bodies — the United Service Organizations during the Second World War (he was its president from 1942 to 1945), the Rockefeller Foundation (president 1948-1952), the National Science Foundation (chairman 1952-1954), and various advisory committees. He wrote a second book, Organization and Management (1948), and many articles. He was awarded honorary degrees by several universities but never held an academic position. He died in New York in 1961 at seventy-five. His work combined the authority of long practical experience with unusually wide reading, producing a synthesis that academics found intellectually serious and practitioners found grounded in reality.

"An organization is a system of consciously coordinated activities or forces of two or more persons."

Simon Kimbangu 1887-1951 · Democratic Republic of the Congo →

Simon Kimbangu was a Congolese religious leader and the founder of Kimbanguism, one of the largest African-initiated churches in the world. He was born on 12 September 1887 (some sources say 1889) in the village of Nkamba, in the Lower Congo region. The area was then part of the Congo Free State, later the Belgian Congo. His family were members of the Kongo people. Kimbangu was educated at a British Baptist Missionary Society school. He was baptised in 1915 and worked as a Baptist catechist, teaching others the Bible. He was married to Marie Mwilu, who would later become an important leader in her own right. For several years he worked in Kinshasa (then Léopoldville), doing jobs including palm oil work. He tried to ignore what he described as a divine calling to preach and heal. In April 1921, he returned to Nkamba and began his public ministry. He preached, healed the sick, and was said to raise the dead. Thousands of people came to see him. His ministry lasted only about five months. In September 1921, Belgian colonial authorities arrested him. He was tried in a military court and sentenced to death in October 1921. The Belgian King Albert I commuted this to life imprisonment with 120 lashes. Kimbangu spent the next 30 years in prison in Lubumbashi (then Elisabethville), nearly 2,000 kilometres from his home. He died there on 12 October 1951.

"It is now time for me to turn myself in to the authorities; let impatient men prone to anger be gone."

Srinivasa Ramanujan 1887-1920 · India (British Raj) →

Srinivasa Ramanujan was an Indian mathematician born in 1887 in Erode, a small town in Tamil Nadu. His family was poor but educated. His father was a clerk and his mother was a devout Hindu. From a young age, he loved numbers. By the age of twelve, he was working through advanced mathematics books on his own. He had very little formal mathematical training. He failed his college exams because he spent all his time on mathematics and neglected other subjects. He lost his scholarship. He worked as a clerk in Madras and did mathematics in every spare moment. He filled notebooks with thousands of results, many of which were new and surprising. In 1913, he wrote a letter to G. H. Hardy, a leading mathematician at Cambridge University in England. The letter contained strange and beautiful formulas. Hardy was amazed. He invited Ramanujan to Cambridge in 1914. The two men worked together for five years. Ramanujan produced brilliant results on number theory, infinite series, and continued fractions. Life in England was hard. The climate was cold. The food was wrong for his vegetarian diet. He became very ill, possibly with tuberculosis or a parasitic infection. He returned to India in 1919 and died in 1920, aged only 32. His notebooks are still being studied today.

"An equation for me has no meaning unless it expresses a thought of God."

T.S. Eliot 1888-1965 · United States / United Kingdom →

T.S. Eliot was a poet and critic. His full name was Thomas Stearns Eliot. He is seen as one of the most important poets in English of the twentieth century. He was born in 1888 in St Louis, in the United States. He died in 1965 in London. Eliot came from a well-off American family. He studied at Harvard University and then in Europe. As a young man he settled in England, and he later became a British citizen. He spent the rest of his life there. Eliot did not begin as a full-time writer. For years he worked at a bank in London, writing poetry in his spare time. Later he became an editor at a publishing house, where he helped many other writers. His most famous poem is 'The Waste Land', published in 1922. It is a difficult, broken poem about a damaged world after the First World War. It made him famous. Later he wrote 'Four Quartets', a long, calmer poem about time and faith. Eliot also wrote important essays about poetry. In 1948 he won the Nobel Prize in Literature. His first marriage was very unhappy and painful for both people. In his later years he found more peace, partly through his religious faith and a happy second marriage.

"April is the cruellest month."

Ludwig Wittgenstein 1889-1951 · Austria-Hungary / United Kingdom →

Ludwig Wittgenstein was an Austrian-British philosopher. Many consider him the greatest philosopher of the twentieth century. He was born on 26 April 1889 in Vienna, Austria, into one of the wealthiest families in the Austro-Hungarian Empire. His father was a powerful steel industrialist. His mother was a gifted musician. The family home was visited by composers like Brahms and Mahler. Three of his brothers died by suicide. Ludwig was first trained as an engineer in Berlin and Manchester, where he worked on aeroplane design. While studying, he became fascinated by the foundations of mathematics. In 1911 he travelled to Cambridge to work with the philosopher Bertrand Russell, who quickly recognised his genius. When the First World War broke out in 1914, Wittgenstein volunteered for the Austro-Hungarian army. He fought bravely and was decorated. While at the front and in a prisoner-of-war camp, he wrote his first book. That book, the Tractatus Logico-Philosophicus, was published in 1921. He believed it had solved all the major problems of philosophy. He gave away his vast inherited fortune and became a primary school teacher in remote Austrian villages. He also designed an austere house for his sister in Vienna. In 1929 he returned to Cambridge, having decided his earlier work contained serious mistakes. He spent the rest of his life developing a very different philosophy. He served as a hospital porter during the Second World War. He died of prostate cancer in Cambridge on 29 April 1951, aged 62. His last words to his housekeeper were: 'Tell them I've had a wonderful life.'

"The limits of my language mean the limits of my world."

Antonio Gramsci 1891-1937 · Italy, Southern Europe →

Antonio Gramsci (1891-1937) was an Italian Marxist philosopher, journalist, and political organiser. He was born in Sardinia, the island off the coast of Italy, into a poor family and grew up in significant poverty. He won a scholarship to the University of Turin, where he became involved in socialist politics. He was one of the founders of the Italian Communist Party in 1921 and became its leader. When Mussolini's fascist government came to power, Gramsci was arrested in 1926 and sentenced to twenty years in prison. The fascist prosecutor famously said at his trial: we must prevent this brain from functioning for twenty years. The effort failed. In prison, Gramsci wrote the Prison Notebooks, a collection of philosophical and political reflections covering more than three thousand pages, which he smuggled out in fragments and which were published after his death. He died in prison in 1937, aged 46, his health destroyed by years of harsh imprisonment. The Prison Notebooks were eventually published in the 1950s and became one of the most important works of political philosophy of the twentieth century.

"All men are intellectuals, but not all men have in society the function of intellectuals."

B.R. Ambedkar 1891-1956 · India, South Asia →

B.R. Ambedkar (1891-1956) was an Indian jurist, economist, social reformer, and philosopher. His full name was Bhimrao Ramji Ambedkar. He was born into a Dalit family, the community then called Untouchables, who occupied the lowest position in India's caste hierarchy and were subjected to severe discrimination, exclusion, and violence. Despite the enormous obstacles placed in front of him by the caste system, Ambedkar became one of the most educated people in India of his generation, earning doctorates from Columbia University in New York and the London School of Economics. He spent his life fighting against caste as a system of oppression and arguing for the full rights and dignity of Dalit people. He was the chief architect of the Indian Constitution, which he designed to protect the rights of all citizens and to prohibit caste discrimination. In the last year of his life, he converted to Buddhism along with hundreds of thousands of his followers, an act he understood as both a spiritual choice and a rejection of the Hindu caste system. He died in 1956, just weeks after completing his final manuscript.

"I measure the progress of a community by the degree of progress which women have achieved."

Zora Neale Hurston 1891-1960 · United States →

Zora Neale Hurston (1891-1960) was an African American anthropologist, folklorist, and novelist, one of the most significant figures in both the Harlem Renaissance and the history of American anthropology. She was born in Notasulga, Alabama, but grew up in Eatonville, Florida — one of the first incorporated all-Black towns in the United States — an experience that would shape everything she wrote and thought. She studied anthropology under Franz Boas at Barnard College and Columbia University, becoming one of the very few Black women to enter the discipline in that era. Boas recognised her exceptional gifts, particularly her ability to collect folklore from communities that would not have opened to a white researcher. She conducted fieldwork across the American South, the Caribbean, and Central America, collecting African American folklore, Hoodoo practices, and Caribbean religious traditions. She wrote four novels, most famously Their Eyes Were Watching God (1937), two books of folklore, an autobiography, and numerous essays. She died in poverty and obscurity in 1960 and was buried in an unmarked grave. She was recovered for a wide readership by Alice Walker, who found and marked her grave in 1973 and wrote about her in a celebrated essay.

"I am not tragically colored. There is no great sorrow dammed up in my soul, nor lurking behind my eyes. I do not mind at all. I do not belong to the sobbing school of Negrohood."

Mao Zedong 1893-1976 · China →

Mao Zedong was a Chinese revolutionary and political leader. He founded the People's Republic of China in 1949 and ruled it until his death in 1976. He was born on 26 December 1893 in Shaoshan, a village in Hunan province. His father was a rural grain dealer who had become relatively well-off. Mao did farm work as a boy, left an arranged marriage, and moved to the provincial capital Changsha to study. China at the time was in crisis. The old imperial system collapsed in 1911. Foreign powers had humiliated the country. Warlords controlled many regions. Millions lived in extreme poverty. Young Mao read widely and met revolutionary ideas. While working at Peking University library in 1918, he was introduced to Marxism. In 1921, he was one of the founders of the Chinese Communist Party. A civil war followed between the Communists and the Nationalist Party led by Chiang Kai-shek. In 1934-35 Mao led the Long March, an 8,000-kilometre retreat that saved the Communist Party from destruction. By the end of World War II, his forces had grown strong. He defeated the Nationalists in 1949. On 1 October 1949 he stood atop Tiananmen Gate in Beijing and proclaimed the People's Republic of China. He ruled for twenty-seven years. He launched huge campaigns: land reform, the Great Leap Forward (1958-62), and the Cultural Revolution (1966-76). Some brought great changes. Others brought disaster. He met US President Nixon in 1972, ending China's isolation from the West. He died in Beijing on 9 September 1976, aged 82.

"The Chinese people have stood up."

José Carlos Mariátegui 1894-1930 · Peru →

José Carlos Mariátegui was a Peruvian thinker, journalist, and political activist. He was one of the most original political writers in Latin American history. He was born on 14 June 1894 in Moquegua, in southern Peru. His family was poor. His father left when he was young, and his mother raised him and his siblings. As a child, Mariátegui suffered a serious injury. Some reports say he fell; others say he was struck. The injury to his left leg became infected and never healed properly. He spent much of his life in pain. Later, the same leg had to be amputated. He used a wheelchair for his final years. He was also a small man, thin, often tired. Yet from this broken body came some of the boldest thinking in Peru's history. He left school at fifteen to work at a newspaper, first as a copy boy, then as a writer. He taught himself through reading. By his early twenties, he was already a well-known journalist in Lima. The Peruvian government sent him to Europe in 1919, partly to get him out of the country because his writing had become too critical. He spent four years in Italy, France, and Germany. He witnessed the rise of Italian fascism. He read Marx, Lenin, Sorel, and many other European thinkers. He returned to Peru in 1923 transformed. Back in Lima, he founded the journal Amauta ('wise teacher' in Quechua) in 1926. It became the most important cultural and political magazine in Peru. He wrote his major book, Seven Interpretive Essays on Peruvian Reality, in 1928. He helped found the Peruvian Socialist Party in 1928. He died on 16 April 1930, aged only 35, from complications of his long illness. In thirty-five years, he had produced a body of work that is still read and debated today.

"We certainly do not want socialism in Latin America to be a copy or an imitation. It must be a heroic creation. We must bring Indo-American socialism to life with our own reality, in our own language."

Lev Vygotsky 1896-1934 · Russia / Soviet Union →

Lev Semyonovich Vygotsky (1896-1934) was a Russian psychologist whose ideas about how children learn and develop have become central to education and developmental psychology worldwide. He was born in Orsha, in present-day Belarus, into a Jewish family. His father was a bank manager; his mother trained as a teacher. He grew up in the city of Gomel, where his early schooling was done partly at home because Jewish students faced restrictions in the Russian school system of that period. Despite these restrictions, he won a place at Moscow State University in 1913 through a lottery system that was one of the few routes open to Jewish applicants. He studied law at Moscow State while also taking courses in history, philosophy, and literature at the more liberal Shaniavsky People's University. He graduated in 1917, just as the Russian Revolution was beginning. For several years he taught literature and psychology in his home city of Gomel, where he also started research on the psychological foundations of learning. In 1924, at age twenty-eight, he gave a lecture at a psychology conference in Leningrad that attracted national attention. He was invited to Moscow and began his brief but extraordinary scientific career. Over the following decade he wrote an enormous amount — books, research papers, and reports — while leading research teams, treating patients, teaching, and helping to build Soviet psychology and special education. His most important book, Thought and Language, was published in the year of his death. He had suffered from tuberculosis since his twenties. His condition worsened in the early 1930s, and he died in Moscow in June 1934 at the age of thirty-seven. His work was banned in the Soviet Union in 1936 — partly because of his use of Western sources, partly because Stalin's regime preferred more mechanical theories of human development. His writings were rediscovered in the 1950s and 1960s, first in the Soviet Union and then, through the efforts of his students and of Western scholars, internationally. By the 1980s his ideas had become central to education worldwide.

"What a child can do with assistance today she will be able to do by herself tomorrow."

Umm Kulthum c. 1898 - 1975 · Egypt →

Umm Kulthum was an Egyptian singer. She was probably the most famous Arab cultural figure of the 20th century. She was born around 1898 in a small village called Tamay az-Zahayra, in the Egyptian Nile Delta. Her exact date of birth is uncertain, partly because village births were not always carefully recorded. Her father was a village imam, a Muslim religious leader. He led prayers and sometimes sang religious songs at weddings to earn extra money. He noticed that his young daughter had an extraordinary voice. He taught her to sing religious songs and then took her with him to perform. To make this socially acceptable in conservative villages, she dressed as a boy when she sang in public. She was known as 'the boy with the strong voice'. In the 1920s she moved to Cairo, the capital and cultural centre of Egypt. She took singing lessons, dropped the boy disguise, and quickly became a star. Egyptian radio began broadcasting her concerts in the 1930s. By the 1940s she was the most famous singer in the Arab world. She gave a concert on the first Thursday of every month for decades. Across the Arab world, streets emptied as people gathered around radios to listen. She sang for kings, presidents, and ordinary villagers. She supported Egyptian independence and President Gamal Abdel Nasser. After Egypt lost the 1967 war with Israel, she gave concerts across the Arab world to raise money for the country. She died in 1975. Around four million people attended her funeral in Cairo, one of the largest in human history.

"Sing a beautiful song with a strong meaning, and the people will love you."

Friedrich Hayek 1899-1992 · Austria →

Friedrich Hayek was an economist and political thinker. He was born in Vienna, Austria, in 1899 and died in 1992. His full name was Friedrich August von Hayek. Hayek grew up in a Europe that was about to change violently. He served briefly in the First World War as a young man. Afterwards he studied at the University of Vienna, where he was part of a group of economists known as the 'Austrian School'. In 1931 Hayek moved to Britain to teach at the London School of Economics. There he became the main rival of John Maynard Keynes, the most famous economist of the age. The two men disagreed deeply about how economies work. In 1944 Hayek published 'The Road to Serfdom', a warning that government planning of the economy could lead to the loss of political freedom. The book made him famous far beyond economics. After the war he worked in the United States and later in Germany. For many years Hayek's ideas were out of fashion. Then, in the 1970s, they returned to influence. He shared the Nobel Prize in Economics in 1974. In the 1980s political leaders in Britain and the United States drew on his thinking. Hayek lived long enough to see his ideas move from the margins to the centre of debate.

"The curious task of economics is to show men how little they really know about what they imagine they can design."

Percy Julian 1899-1975 · United States →

Percy Lavon Julian (1899-1975) was an African American chemist whose pioneering synthesis of plant-derived steroids made cortisone and other hormone-based medicines widely available for the first time. He was born in Montgomery, Alabama, the grandson of former slaves. Alabama's public schools did not offer education beyond the eighth grade to Black children at the time, but his parents — a railway mail clerk and a teacher — insisted on his further education. He entered DePauw University in Indiana as what the institution called a sub-freshman, taking high school classes alongside his college studies, and graduated as valedictorian in 1920. American graduate programmes in chemistry were largely closed to Black students; he was refused admission at several top universities and taught for several years at historically Black colleges before winning a fellowship for graduate work at Harvard. Harvard gave him a master's degree but denied him the chance to teach or to complete a doctorate because of his race. He eventually earned his doctorate in Vienna in 1931, one of the few options then available. In 1935 he completed the total synthesis of the alkaloid physostigmine, used to treat glaucoma, beating a competing English group. Unable to get university chemistry positions because of his race, he joined the Glidden Company, a paint manufacturer, where he led research that developed industrial methods for producing steroids from soybean oil — processes that made cortisone affordable to patients with rheumatoid arthritis and opened the way to a generation of hormone-based medicines. He later founded his own company. He and his family faced racist violence in the Chicago suburb where they bought a house in 1950, including attempts to burn and bomb their home. He died in 1975. He was elected to the National Academy of Sciences in 1973, the second African American so honoured.

"You can do anything you want if you will put enough work into it. That has always been my philosophy."

W. Edwards Deming 1900-1993 · United States →

William Edwards Deming (1900-1993) was an American statistician and management consultant whose work on quality control and systematic thinking about production reshaped manufacturing in Japan after the Second World War and, later, in the United States. He was born in Sioux City, Iowa, and grew up in a small town in Wyoming under difficult family circumstances. He studied electrical engineering at the University of Wyoming, earned a master's degree in mathematics and physics at the University of Colorado, and completed a PhD in mathematical physics at Yale in 1928. He worked for the United States Department of Agriculture and then the Census Bureau, where he applied statistical methods to sampling and the design of surveys. In 1947 he was invited to help prepare the Japanese census and returned to Japan in the early 1950s at the invitation of the Japanese Union of Scientists and Engineers. His lectures on statistical quality control and his broader management philosophy were widely adopted by Japanese industry, where he became a famous and revered figure decades before his ideas were taken seriously in his own country. The Deming Prize, established in Japan in 1951 and still awarded annually, recognised his influence. In the United States his work was largely ignored until a 1980 NBC documentary, If Japan Can, Why Can't We, brought him to public attention at the age of eighty. He spent his final thirteen years teaching, consulting, and writing; his major book Out of the Crisis appeared in 1982. He continued leading seminars until shortly before his death in 1993, aged ninety-three.

"In God we trust; all others must bring data."

C.L.R. James 1901-1989 · Trinidad and Tobago →

Cyril Lionel Robert James was a Trinidadian historian, political thinker, novelist, and cricket writer. He is one of the most important intellectuals the Caribbean has produced. He was born on 4 January 1901 in Tunapuna, Trinidad, then a British colony. His father was a schoolteacher. His mother was a strong reader who filled the house with books. Young Cyril grew up reading English literature, the Bible, and Greek classics. He was also obsessed with cricket. These three loves, literature, politics, and cricket, stayed with him all his life. He won a scholarship to Queen's Royal College in Port of Spain, one of the best schools in Trinidad. He became a teacher, a cricketer, and a writer of short stories. In 1932, he sailed to England. In Lancashire, he lived with his friend Learie Constantine, the great West Indian cricketer. He wrote cricket reports for the Manchester Guardian. But he also became deeply involved in politics. He joined Trotskyist groups. He met African leaders like Kwame Nkrumah and Jomo Kenyatta who were then studying in London. He helped build the movement for African independence from outside Africa. In 1938, he published The Black Jacobins, his masterpiece, a history of the Haitian Revolution and Toussaint Louverture. That same year he moved to the United States. He lived there for fifteen years, writing, teaching, and working with labour movements. In 1953, he was arrested during the anti-communist scare and held on Ellis Island. He was eventually deported. He returned to Trinidad in the late 1950s to support his former student Eric Williams, then leading the country toward independence. The two later fell out. James spent his final decades moving between England, Trinidad, the United States, and Africa. He died in London on 31 May 1989, aged 88. He had lived through almost the whole 20th century and written about most of it.

"What do they know of cricket who only cricket know?"

Margaret Mead 1901-1978 · United States →

Margaret Mead (1901-1978) was an American cultural anthropologist who became the most publicly prominent and widely read anthropologist of the twentieth century. She was born in Philadelphia and studied at Barnard College before completing her doctorate under Franz Boas at Columbia University. In 1925, at the age of twenty-three, she travelled to American Samoa to conduct fieldwork on adolescence — a period of turmoil in Western culture that many assumed was biologically inevitable. She wanted to test whether this turmoil was universal or culturally specific. Her book Coming of Age in Samoa (1928) argued that adolescence in Samoa was a calm and untroubled transition, suggesting that the storm and stress of Western adolescence was a product of culture, not biology. The book became an international sensation. She went on to conduct fieldwork in Papua New Guinea, Bali, and elsewhere, writing influential books on gender, temperament, and culture. She was also a tireless public intellectual, writing a column for Redbook magazine for many years and testifying before Congress on issues from nuclear weapons to environmental policy. She was married three times, all to fellow anthropologists, and her personal life was characterised by the same willingness to challenge convention that marked her intellectual work. She died in 1978.

"Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it is the only thing that ever has."

Karl Popper 1902-1994 · Austria / United Kingdom →

Karl Popper was an Austrian-British philosopher of science and politics. He was born in 1902 in Vienna into a well-off, secular Jewish family that had converted to Lutheran Christianity. His parents loved books, and Popper grew up reading widely. As a young man he tried out many of the big intellectual movements of his time. He attended Marxist meetings, studied Freudian psychology, and worked briefly with the Adlerian school of psychology. He was struck by something that bothered him for the rest of his life. The followers of these movements seemed able to explain everything. Whatever happened in the world, Marxism, Freudianism, and Adlerian theory could fit it into their system. Popper began to wonder whether this was a strength or a weakness. He trained as a teacher and earned a doctorate in philosophy from the University of Vienna in 1928. In 1934 he published his first major book, Logic of Scientific Discovery, which made his name in philosophy of science. As Hitler rose to power, Popper, with his Jewish background, knew he had to leave Europe. In 1937 he took a teaching post in New Zealand. There, during the Second World War, he wrote The Open Society and Its Enemies, his great defence of liberal democracy. In 1946 he moved to the London School of Economics, where he stayed for the rest of his career. He was knighted in 1965. He wrote on philosophy of science, politics, the mind, and many other subjects. He died in 1994 in London at the age of 92.

"A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice."

George Orwell 1903-1950 · England →

George Orwell was the pen name of Eric Arthur Blair, an English writer, journalist, and essayist. He is one of the most quoted writers of the 20th century. He was born on 25 June 1903 in Motihari, in the Bengal region of British India. His father worked for the British colonial government. His mother brought him back to England when he was a small child. He grew up in modest circumstances in what he later called the 'lower-upper-middle class'. He won scholarships to good English schools, ending up at Eton, one of the most elite schools in the country. He did not do well there academically. Instead of going to university, in 1922 he sailed to Burma (now Myanmar) and joined the Indian Imperial Police. He served for five years. What he saw changed his life. He watched British officers beat and humiliate Burmese people. He took part in colonial rule himself. He came to hate it. In 1927, he left the police, returned to England, and began writing. For years he was poor. He lived with tramps in London, washed dishes in Paris, picked hops in Kent, and taught in small schools. This experience became the material for his first books, Down and Out in Paris and London (1933) and The Road to Wigan Pier (1937). In 1936, he went to Spain to fight against the fascist forces in the Spanish Civil War. He was shot in the throat by a sniper. His account of the war, Homage to Catalonia (1938), is one of the great books of 20th-century political writing. He spent the Second World War in London, working for the BBC and writing. His two most famous books came in his last years. Animal Farm (1945) was a satire on the Soviet Union. Nineteen Eighty-Four (1949) was a novel about totalitarian rule. He had tuberculosis throughout these years. He died in London on 21 January 1950, aged 46, soon after finishing Nineteen Eighty-Four.

"All animals are equal, but some animals are more equal than others."

Joan Robinson 1903 - 1983 · United Kingdom →

Joan Robinson was a British economist. She was one of the most important economists of the 20th century. Many people think she should have won the Nobel Prize in Economics. She never did, almost certainly because she was a woman and because her views were politically uncomfortable. She was born in 1903 in Camberley, Surrey, in southern England. Her birth name was Joan Maurice. She came from an upper-middle-class family. Her father was a soldier and her mother was the daughter of a famous classics professor. Joan studied economics at Cambridge from 1922. The university had only recently begun allowing women to take degree examinations. She married another young economist, Austin Robinson, in 1926. They had two daughters. She became part of the famous group of Cambridge economists around John Maynard Keynes. Keynes was working out his revolutionary new theory of how economies actually work. Joan was one of his closest collaborators. She helped develop his ideas. She also did major original work of her own. Her 1933 book The Economics of Imperfect Competition introduced ideas that became standard in economics. She taught at Cambridge for over 50 years. She was finally promoted to a full professorship in 1965, much later than she should have been. She was sharp, sometimes difficult, and often controversial. She visited China multiple times during the Cultural Revolution and wrote about it more positively than later events would justify. She also visited North Korea and admired aspects of its economy. Some of these political judgements have aged badly. She remained intellectually active until shortly before her death in 1983.

"The misery of being exploited by capitalists is nothing compared to the misery of not being exploited at all."

Pablo Neruda 1904–1973 · Chile →

Pablo Neruda (1904–1973) was a Chilean poet and diplomat, widely regarded as the greatest Spanish-language poet of the 20th century and one of the most influential voices in world literature. He was born Neftalí Ricardo Reyes Basoalto in Parral, Chile, and adopted his pen name as a teenager, partly to conceal his writing from his disapproving father. He published his first major collection, Twenty Love Poems and a Song of Despair, at the age of nineteen. He served as a Chilean diplomat in several countries, witnessed the Spanish Civil War firsthand, and was a committed communist throughout his adult life. He won the Nobel Prize in Literature in 1971. He died in Santiago just twelve days after the military coup led by Augusto Pinochet that overthrew the democratically elected government of Salvador Allende, a government in which Neruda had played an active role. The circumstances of his death remain disputed.

"They can cut all the flowers, but they cannot keep spring from coming."

Ayn Rand 1905–1982 · St Petersburg, Russia / United States →

Ayn Rand (1905–1982) was a Russian-American economist, novelist and philosopher. She was born Alisa Rosenbaum in St Petersburg, Russia, and lived through the Russian Revolution and the early years of Soviet communism before emigrating to the United States in 1926. She developed a philosophy she called Objectivism, which she expressed through both novels and non-fiction writing. Her two most famous novels — The Fountainhead (1943) and Atlas Shrugged (1957) — sold millions of copies and made her one of the most widely read thinkers of the 20th century, despite being largely ignored or dismissed by academic philosophers. Her ideas remain deeply influential in American politics and business culture, particularly on the political right.

"I swear by my life and my love of it that I will never live for the sake of another man, nor ask another man to live for mine."

Dietrich Bonhoeffer 1906-1945 · Germany →

Dietrich Bonhoeffer was a German Lutheran pastor, theologian, and resister against Hitler. He was born in 1906 in Breslau, then in Germany, now Wrocław in Poland. His father was a leading psychiatrist; his mother homeschooled the children. The family was educated, musical, and largely secular. When the teenage Dietrich announced he would study theology, his family was surprised but supportive. He earned his doctorate at the University of Berlin in 1927, aged just 21. He was a brilliant student. In 1930 he spent a year at Union Theological Seminary in New York. There he attended an African American Baptist church in Harlem, sang gospel hymns, and read the social gospel of writers like Walter Rauschenbusch. The experience changed him. He returned to Germany convinced that Christian faith required real engagement with the world, especially with the suffering and oppressed. Hitler took power in January 1933. Two days later, Bonhoeffer gave a radio talk attacking the Nazi 'leader principle'. The broadcast was cut off. Over the next decade he became one of the founding voices of the Confessing Church, which resisted the Nazification of German Protestantism. He ran an underground seminary at Finkenwalde. He helped Jews escape to Switzerland. He joined the German military resistance through the Abwehr (military intelligence), where his brother-in-law worked. He knew of plots to kill Hitler. In April 1943 he was arrested. He spent nearly two years in Tegel prison in Berlin, writing constantly. After the failed July 1944 plot to kill Hitler, his deeper involvement was discovered. On 9 April 1945, two weeks before American troops liberated the camp, he was hanged at Flossenbürg concentration camp. He was 39.

"Cheap grace is the deadly enemy of our church. We are fighting today for costly grace."

Grace Hopper 1906-1992 · United States →

Grace Brewster Murray Hopper (1906-1992) was an American mathematician, computer scientist, and United States Navy rear admiral whose work on programming languages and compilers helped turn computing from a specialist craft into a discipline ordinary people could enter. She was born in New York City to a family that encouraged her scientific curiosity from childhood — at seven, she took apart seven alarm clocks to see how they worked. She studied mathematics and physics at Vassar College and earned a doctorate in mathematics from Yale in 1934, an unusual achievement for a woman of her era. She taught mathematics at Vassar until the United States entered the Second World War. In 1943, at thirty-seven, she joined the Naval Reserve and was assigned to the Bureau of Ships Computation Project at Harvard, where she became one of the first programmers of the Mark I, one of the earliest large electromechanical computers. After the war she moved into private industry, joining Eckert-Mauchly Computer Corporation and later Remington Rand and Sperry. At these companies she developed the first practical compiler, a program that translates human-readable instructions into machine code, and led the team that created FLOW-MATIC, a predecessor of COBOL. She was recalled to naval service several times and finally retired from the Navy as a rear admiral at seventy-nine, the oldest officer in active service at the time. She continued to lecture widely until her death in 1992.

"It is easier to ask forgiveness than it is to get permission."

Hannah Arendt 1906-1975 · Germany / United States →

Hannah Arendt (1906-1975) was a German-American political philosopher. She was born into a Jewish family in Hanover, Germany, and studied philosophy under Martin Heidegger and Karl Jaspers. When the Nazis came to power in 1933 she fled Germany, was briefly interned in France, and eventually reached the United States in 1941, where she spent the rest of her life. Her experience as a Jewish refugee from Nazi Germany shaped all of her thinking: she wanted to understand how the totalitarian regimes of the twentieth century, Nazi Germany and Stalinist Russia, had been possible, and what they revealed about the fragility of political freedom and human dignity. Her most important books are The Origins of Totalitarianism (1951), The Human Condition (1958), and Eichmann in Jerusalem (1963). She was a professor at the University of Chicago and the New School for Social Research in New York. She died in 1975, mid-sentence at her typewriter, working on her final book.

"The sad truth is that most evil is done by people who never make up their minds to be good or evil."

Kurt Gödel 1906 - 1978 · Austria (later United States) →

Kurt Gödel was an Austrian-American logician, mathematician, and philosopher. He is widely considered the greatest logician of the 20th century. His incompleteness theorems changed how mathematicians and philosophers understand the foundations of mathematics. He was born in 1906 in Brunn, then part of Austria-Hungary (now Brno in the Czech Republic). His parents were ethnic Germans living in a mostly Czech city. His father managed a textile factory. The family was comfortable. Young Kurt was a quiet, curious child. He asked so many questions that his family nicknamed him 'Mr. Why'. He suffered through a serious illness with rheumatic fever at age six, which he believed had permanently damaged his heart, even though doctors found no lasting damage. The belief shaped his fearful approach to his own health for the rest of his life. He studied at the University of Vienna in the 1920s. He attended the famous Vienna Circle, a group of philosophers and scientists who met to discuss the foundations of knowledge. He earned his doctorate in mathematics in 1929. The next year, he proved his most famous result, the incompleteness theorems. He was 24. In the 1930s, the rise of Nazism made Vienna dangerous. Gödel was not Jewish but had Jewish friends and colleagues. After the Nazi takeover of Austria in 1938 and the start of World War II, he and his wife Adele fled to America. He took a position at the Institute for Advanced Study in Princeton, where Einstein also worked. The two became close friends. Gödel did important later work in cosmology and philosophy. He died in 1978 of malnutrition. He had become so paranoid about poisoning that he stopped eating after his wife was hospitalised.

"Either mathematics is too big for the human mind, or the human mind is more than a machine."

Frida Kahlo 1907-1954 · Mexico →

Magdalena Carmen Frida Kahlo y Calderón (1907-1954) was a Mexican painter whose intensely personal and politically engaged work has made her one of the most widely recognised artists of the twentieth century. She was born in Coyoacan, then a village outside Mexico City, in the Blue House her parents had built and where she would live most of her life. Her father was a German-born photographer of Hungarian Jewish background; her mother was a Mexican woman of Spanish and Indigenous descent. Kahlo later changed her date of birth to 1910, the year the Mexican Revolution began, to align her life with the revolutionary era. She contracted polio at six, which left her right leg permanently weakened. At eighteen she was in a streetcar accident that broke her spine, pelvis, collarbone, and right leg; a metal rod pierced her body. She spent months in bed recovering and began painting seriously during this period, using a mirror mounted above her bed to paint self-portraits. In 1929 she married the muralist Diego Rivera, twenty years her senior; their tempestuous relationship, including divorce and remarriage, lasted until her death. She painted more than 140 works, about a third of them self-portraits. She had a single solo exhibition in Mexico during her lifetime, in 1953, when she was carried to the gallery in her hospital bed. She died in 1954 at forty-seven, with her diary reading: I hope the exit is joyful, and I hope never to return.

"I paint myself because I am so often alone and because I am the subject I know best."

Rachel Carson 1907-1964 · United States →

Rachel Carson (1907-1964) was an American marine biologist, writer, and conservationist. She was born in rural Pennsylvania and developed a love of the natural world from childhood, spending hours outdoors observing the life around her family's farm. She studied biology at Johns Hopkins University, where she was one of very few women in the sciences, and worked as a marine biologist for the US Fish and Wildlife Service for many years. She was also a gifted writer who published three acclaimed books about the sea before Silent Spring. In 1962 she published Silent Spring, a carefully researched and beautifully written account of how synthetic pesticides, particularly DDT, were accumulating through food chains and destroying bird populations, insect communities, and entire ecosystems. The book was met with a massive campaign of attack from the chemical industry, which attempted to discredit both her science and her personally, including attacks on her as a hysterical woman and a communist. She died of breast cancer in 1964, two years after the book's publication, never knowing the full extent of its influence. Silent Spring is widely credited with launching the modern environmental movement and leading to the banning of DDT in the United States and the creation of the Environmental Protection Agency.

"In every outthrust headland, in every curving beach, in every grain of sand there is a story of the earth."

Abraham Maslow 1908-1970 · United States →

Abraham Maslow (1908-1970) was an American psychologist. He was born into a poor Jewish immigrant family in Brooklyn, New York, and described his childhood as lonely and unhappy. He studied psychology at the University of Wisconsin and spent most of his career at Brandeis University in Massachusetts. He became one of the founders of humanistic psychology: a movement that argued that psychology should study not only mental illness and dysfunction but also human health, creativity, and the capacity for a full and meaningful life. He is best known for the hierarchy of needs, a model of human motivation that organises human needs from the most basic physical requirements for survival up to the need for self-actualisation: the full development of a person's potential. This model has been extraordinarily influential in psychology, education, management, and development. He died in 1970 still working on his ideas, convinced that he had only begun to understand human potential.

"What a man can be, he must be. This need we may call self-actualisation."

Claude Lévi-Strauss 1908-2009 · Belgium / France →

Claude Lévi-Strauss (1908-2009) was a Belgian-French anthropologist, one of the most influential social scientists of the twentieth century. He was born in Brussels to a French Jewish family and grew up in Paris. He studied philosophy and law at the Sorbonne before becoming interested in ethnography. In 1935 he joined a French university mission to Brazil, spending several years conducting fieldwork among indigenous peoples of the Brazilian interior. Fleeing Nazi-occupied France, he spent the war years in New York, where contact with the structural linguistics of Roman Jakobson transformed his intellectual approach. He returned to France after the war and published a series of major works — The Elementary Structures of Kinship (1949), Tristes Tropiques (1955), Structural Anthropology (1958), and the four-volume Mythologiques (1964-1971) — that established structural anthropology as one of the dominant intellectual movements of mid-twentieth-century France and Europe. He was elected to the prestigious Collège de France and became one of the key figures in the broader structuralist movement that shaped French intellectual life from the 1950s onwards. He died in 2009 at the age of one hundred, the last great figure of the classical period of French intellectual life.

"The world began without man and will end without him."

John Kenneth Galbraith 1908-2006 · Canada / United States →

John Kenneth Galbraith was an economist and writer. He was born in 1908 on a farm in Ontario, Canada, and died in 2006. He later became an American citizen and spent most of his career in the United States. Galbraith studied agricultural economics before moving into wider economic questions. He taught for many years at Harvard University. He was unusually tall, around two metres, and had a sharp, witty writing style that made his books bestsellers far beyond economics. Galbraith did not stay only in the university. During the Second World War he helped run price controls for the United States government, holding down prices to stop wartime inflation. Later he advised several Democratic presidents. In the early 1960s, President John F. Kennedy made him United States ambassador to India, a country Galbraith came to know and admire. His most famous books appeared in the 1950s and 1960s. 'The Affluent Society' (1958) and 'The New Industrial State' (1967) reached huge audiences. In them Galbraith argued that modern economics had not kept up with how rich societies actually worked. Galbraith was a public figure as much as a scholar. He believed economists should write for ordinary citizens, not just for each other, and he did so for over fifty years.

"Wealth is not without its advantages, and the case to the contrary, although it has often been made, has never proved widely persuasive."

Simone de Beauvoir 1908-1986 · France, Western Europe →

Simone de Beauvoir (1908-1986) was a French philosopher, novelist, and feminist thinker. She was born in Paris and studied philosophy at the Sorbonne, where she came second in the national philosophy examination, beaten only by Jean-Paul Sartre, who became her lifelong intellectual partner and companion. She spent most of her adult life in Paris, writing philosophy, fiction, essays, and memoirs. Her most important philosophical work is The Second Sex, published in 1949, which is one of the founding texts of modern feminist philosophy. In it she argued that women are not born inferior but are made to be subordinate through social processes, cultural norms, and internalised beliefs. She was a committed political activist throughout her life, supporting Algerian independence, signing a petition supporting the right to abortion in France at a time when this was dangerous to do, and consistently speaking out on behalf of those without power. She lived by her philosophy: her own life, including her refusal to marry and her insistence on her independence as a thinker, was a demonstration of what she argued was possible.

"One is not born, but rather becomes, a woman."

Thurgood Marshall 1908-1993 · United States →

Thurgood Marshall was an American civil rights lawyer and the first Black Justice of the United States Supreme Court. He spent his life using the law to dismantle racial segregation in America. He was born Thoroughgood Marshall on 2 July 1908 in Baltimore, Maryland. He shortened the name to Thurgood at age six because his classmates teased him about it. His father William was a railroad porter; his mother Norma was a school teacher. As a teenager Marshall got into trouble at school. As punishment he was made to read the United States Constitution. The exercise changed his life. He saw clearly the gap between the Constitution's promises of equality and the racist 'Jim Crow' laws that ruled the American South. He wanted to study law at the University of Maryland, the public university of his home state. He was rejected because he was Black. He went instead to Howard University, a historically Black school in Washington, D.C. He graduated first in his class in 1933. His main mentor at Howard was Charles Hamilton Houston, who taught his students that law could be used as a tool for social change. In 1936 Marshall joined the NAACP, the National Association for the Advancement of Colored People. He became its chief lawyer. From 1940 he led the NAACP Legal Defense Fund. Over twenty-five years he argued 32 cases before the Supreme Court and won 29. He won Brown v. Board of Education in 1954. President Lyndon Johnson nominated him to the Supreme Court in 1967. He served for 24 years. He retired in 1991 and died on 24 January 1993, aged 84.

"In recognizing the humanity of our fellow beings, we pay ourselves the highest tribute."

Kwame Nkrumah 1909-1972 · Ghana, West Africa →

Kwame Nkrumah (1909-1972) was the first president of independent Ghana and one of the most important political thinkers and leaders of the twentieth century. He was born in the Gold Coast, as Ghana was then called under British colonial rule. He studied in the United States at Lincoln University and the University of Pennsylvania, where he was deeply influenced by Pan-African thought and by the political philosophy of W.E.B. Du Bois and Marcus Garvey. He returned to Africa and led the campaign for Ghanaian independence, which was achieved in 1957, making Ghana the first sub-Saharan African country to gain independence from colonial rule. His famous declaration that the independence of Ghana was meaningless unless it was linked to the total liberation of Africa set the tone for his political vision. He led Ghana until 1966, when he was overthrown in a military coup while on a visit to Hanoi. He spent his remaining years in Guinea, continuing to write and think until his death in 1972. His books, including Consciencism and Neo-Colonialism: The Last Stage of Imperialism, remain important texts in African political thought.

"The independence of Ghana is meaningless unless it is linked up with the total liberation of the African continent."

Mahmoud Mohamed Taha 1909-1985 · Sudan →

Mahmoud Mohamed Taha was a Sudanese Islamic reformer, political thinker, civil engineer, and Sufi mystic, known to his followers as Ustadh ('the teacher') Mahmoud. He developed one of the most ambitious twentieth-century reinterpretations of Islam, which he called the Second Message of Islam. He was executed for apostasy by the Sudanese government in January 1985. He was 76. He was born in 1909 in a village near Rufa'a, on the eastern bank of the Blue Nile about 150 km south of Khartoum. His family came from a Sufi religious tradition linked to the Qadiriyya order. He was educated at Gordon Memorial College in Khartoum (later the University of Khartoum), graduating as a civil engineer in 1936. He worked briefly for Sudan Railways, then started his own engineering business in Rufa'a. His political life began with the founding of the Sudanese Republican Party in October 1945, an anti-monarchical, pro-independence movement seeking a Sudanese republic free of British-Egyptian colonial rule. He was imprisoned twice in 1946 by the British colonial administration, the second time for two years. During his second imprisonment and in a subsequent period of religious seclusion (khalwa) at his home in Rufa'a from 1948 to 1951, he developed the theological vision that would shape the rest of his life. He emerged from seclusion to lead a small but committed movement called the Republican Brotherhood, distinct from the Egyptian Muslim Brotherhood despite the similar name. He published his masterwork The Second Message of Islam in 1967. As President Gaafar Nimeiri's regime imposed Sharia law in Sudan from 1983, Taha distributed pamphlets opposing the move. He was arrested on 5 January 1985, tried for apostasy in a hasty proceeding he refused to recognise, and publicly hanged on 18 January 1985.

"The Meccan message is the message of equality and freedom. The Medinan message was for its time. The Second Message returns to the first."

Peter Drucker 1909-2005 · United States (born Austria) →

Peter Ferdinand Drucker (1909-2005) was an Austrian-American writer and teacher whose books and articles over seven decades shaped the practice of management and helped establish it as a distinct field of study. He was born in Vienna in 1909 to an educated middle-class family — his father a senior civil servant, his mother one of the first women to study medicine in Austria. The Drucker home was a meeting place for intellectuals, and the young Peter grew up among people like the economist Joseph Schumpeter and the psychoanalyst Sigmund Freud. He studied law in Hamburg and Frankfurt, earned a doctorate in international law in 1931, and worked briefly as a financial journalist. The rise of Nazism drove him out of Germany in 1933; he moved first to London, then in 1937 to the United States, where he spent the rest of his life. His 1939 book The End of Economic Man analysed the rise of fascism. In 1943 General Motors invited him to spend two years studying the company, producing Concept of the Corporation in 1946, one of the first serious studies of how a large modern business actually works. Over the following decades he wrote thirty-nine books and hundreds of articles covering management, innovation, the non-profit sector, economics, and the rise of the knowledge worker. He taught at New York University and for most of his later career at the Claremont Graduate School in California, which named its management school after him. He advised corporations, governments, non-profits, and religious organisations. He died in Claremont in 2005 at the age of ninety-five.

"The purpose of a business is to create a customer."

Simone Weil 1909-1943 · France →

Simone Weil (1909-1943) was a French philosopher, political activist, and mystic. She was born in Paris into a secular Jewish family of considerable intellectual distinction — her brother André became one of the greatest mathematicians of the twentieth century. She was educated at the École Normale Supérieure, where she studied alongside Simone de Beauvoir, graduating first in her class. She taught philosophy in several provincial schools but was also committed to a different kind of knowing: she worked for a year in a Renault car factory to experience industrial labour from the inside, went to the front during the Spanish Civil War, and worked as an agricultural labourer. She developed a profound mystical Christian spirituality while remaining outside the institutional church. She died in 1943 at the age of thirty-four in England, where she had gone to work for the Free French government in exile. The immediate cause of her death was tuberculosis, but she had refused to eat more than the ration allowed to people in occupied France. She left behind an extraordinary body of writing, much of it published posthumously, covering philosophy, theology, political theory, labour, affliction, and attention.

"Attention is the rarest and purest form of generosity."

Akira Kurosawa 1910-1998 · Japan →

Akira Kurosawa (1910-1998) was a Japanese film director, screenwriter, and editor whose thirty completed feature films include some of the most influential works in the history of cinema. He was born in Tokyo, the youngest of seven children in a family descended from samurai. His older brother Heigo, a narrator for silent films, took him to see European and American movies and introduced him to Western literature; Heigo's suicide in 1933 marked Kurosawa deeply. Kurosawa had initially wanted to be a painter and studied Western art before entering the film industry as an assistant director in 1936. He learned his craft under the veteran director Kajiro Yamamoto and directed his first film in 1943, during the Second World War. After the war he emerged as a major figure in the revival of Japanese cinema. His 1950 film Rashomon won the Golden Lion at the Venice Film Festival and the Academy Award for Best Foreign Language Film, bringing Japanese cinema to wide international attention for the first time. Over the following four decades he directed Seven Samurai, Throne of Blood, The Hidden Fortress, Yojimbo, Ikiru, High and Low, Ran, and many other films, adapting Shakespeare, Dostoevsky, and Japanese sources, and producing original works set in both historical and contemporary Japan. He faced career setbacks in the 1970s, including a suicide attempt in 1971, but continued working into his late eighties. He was awarded an honorary Oscar in 1990 and died in 1998 at eighty-eight.

"To be an artist means never to avert one's eyes."

Dorothy Hodgkin 1910-1994 · United Kingdom →

Dorothy Crowfoot Hodgkin was an English chemist. She remains the only British woman ever to win a Nobel Prize in any of the sciences. She was born on 12 May 1910 in Cairo, Egypt, where her father worked for the British colonial education service. The family later moved to Sudan. As a young child, Dorothy and her sisters were sent to live with relatives in England while her parents stayed in North Africa. She loved crystals from age ten, when she made her first crystals from chemistry kits. She was one of only two girls allowed to study chemistry at her school in Suffolk, where the subject was thought to be for boys. She studied chemistry at Somerville College, Oxford, from 1928 to 1932. She then went to Cambridge for her PhD with the crystallographer J. D. Bernal. In her mid-twenties she developed serious rheumatoid arthritis, which would deform her hands and feet for the rest of her life. She kept working anyway. She returned to Oxford in 1934 and worked there for the rest of her career. In 1937 she married Thomas Hodgkin, a historian who became an authority on African history. They had three children. She spent decades working out the three-dimensional structures of complicated biological molecules using X-ray crystallography. She solved the structure of penicillin in 1945, vitamin B12 in 1955, and finally insulin in 1969, after working on it for thirty-four years. She won the Nobel Prize in Chemistry in 1964. She died on 29 July 1994, aged 84.

"I was captured for life by chemistry and by crystals."

Marshall McLuhan 1911-1980 · Canada →

Marshall McLuhan (1911-1980) was a Canadian media theorist. He was born in Edmonton, Alberta, and studied literature at the University of Manitoba and Cambridge University in England. He spent most of his academic career at the University of Toronto, where he became one of the most famous and controversial public intellectuals of the 1960s and 1970s. He is best known for two phrases that have become part of everyday language: the medium is the message and the global village. His books Understanding Media (1964) and The Gutenberg Galaxy (1962) argued that the dominant communication technology of any period, whether oral storytelling, writing, print, or electronic media, shapes how people think, what they can think, and how they organise their social lives far more profoundly than the content of any particular message. He was dismissed by many academic critics as too speculative and too interested in provocation, but he was also widely celebrated by artists, media professionals, and a general public who found his ideas illuminating. He had a stroke in 1979 that left him unable to speak and died in 1980. His ideas have gained new relevance in the age of the internet and social media.

"The medium is the message. This is merely to say that the personal and social consequences of any medium result from the new scale that is introduced into our affairs by each extension of ourselves."

Alan Turing 1912-1954 · United Kingdom →

Alan Turing was an English mathematician, codebreaker, and founder of modern computer science. He was born in London on 23 June 1912. His father worked in the Indian Civil Service, which meant Turing's parents spent much of his childhood abroad. He and his older brother were often raised by foster families in England. As a boy he was shy, odd, and brilliant at mathematics. He studied at King's College, Cambridge, and then earned a PhD at Princeton in 1938. In 1936, while still a student, he wrote a paper called On Computable Numbers. It described an imaginary machine that could follow simple rules to perform any calculation. This imaginary machine, now called a Turing machine, became the theoretical foundation of every modern computer. When the Second World War began in September 1939, Turing joined the British codebreaking centre at Bletchley Park. He helped design a machine called the Bombe, used to break the German Enigma code. His work is thought to have shortened the war by years. He was awarded the OBE in 1945. After the war, Turing worked on building real computers in London and Manchester. In 1950 he proposed the Turing test, a way of asking whether a computer could think. He also began work on mathematical biology. In 1952, Turing was prosecuted for being gay, which was then illegal in Britain. He was forced to take hormone treatment as punishment. He died on 7 June 1954, aged 41, from cyanide poisoning. His death was ruled a suicide. In 2013 he received a formal royal pardon.

"We can only see a short distance ahead, but we can see plenty there that needs to be done."

Milton Friedman 1912-2006 · United States →

Milton Friedman was an American economist. He was born in New York City in 1912 and died in 2006. His parents were poor immigrants from Eastern Europe. He was the first person in his family to go to university. Friedman studied economics during the Great Depression, a time of mass unemployment in the 1930s. He spent most of his career at the University of Chicago, from 1946 onwards. The group of economists there became known as the 'Chicago School', and Friedman was its most famous member. Friedman was both a serious academic and a public figure. As an academic, he did careful statistical work on money, prices, and spending. In 1976 he won the Nobel Prize in Economics for this work. But he was also a skilled communicator. He wrote a popular book, 'Capitalism and Freedom', and later made a television series called 'Free to Choose' that was watched by millions. He became the best-known voice arguing for free markets and a smaller role for government. His ideas influenced political leaders in the 1980s, especially in the United States and Britain. He also advised governments in other countries, including Chile, which later drew strong criticism. Friedman was admired and attacked in roughly equal measure. Few economists of the twentieth century were as influential, and few were as fiercely debated.

"There is no such thing as a free lunch."

Taiichi Ohno 1912-1990 · Japan →

Taiichi Ohno (1912-1990) was a Japanese industrial engineer whose work at the Toyota Motor Company produced the Toyota Production System, a way of organising manufacturing that has since spread worldwide under names including lean manufacturing and just-in-time production. He was born in 1912 in Dalian, then in Japanese-occupied Manchuria, where his father worked. He graduated from what is now Nagoya Technical High School in 1932 and joined Toyoda Automatic Loom Works, a textile machinery company run by the Toyoda family. In 1943 he moved to Toyota Motor Company, the automobile manufacturer that the same family had founded. He would remain there for the rest of his career. He started as a shop-floor supervisor and rose through operational roles, eventually becoming executive vice president in 1975. His rise came through his practical work on the production line, not through the management hierarchy. Starting in the late 1940s and continuing through the 1950s and 1960s, he developed the production methods that would make Toyota one of the most efficient and quality-focused manufacturers in the world. The methods were not written down in any comprehensive way for decades; they were transmitted through the practice of production workers and engineers trained by Ohno himself. Workshops and demonstrations — not textbooks — were his teaching methods. His short book Toyota Production System: Beyond Large-Scale Production, published in Japanese in 1978 and in English in 1988, remains the most direct source for his ideas. Western interest in his work exploded in the 1980s when American manufacturers began realising that they had been outcompeted by Japanese firms using methods they did not understand. He retired from Toyota in 1978 and died in Toyota City in 1990.

"Having no problems is the biggest problem of all."

Aimé Césaire 1913-2008 · Martinique, Caribbean →

Aimé Césaire (1913-2008) was a poet, playwright, and political thinker from Martinique, an island in the Caribbean that was, and still is, a French territory. He was born into a poor family but won a scholarship to study in Paris, where he became one of the most brilliant students of his generation. In Paris in the 1930s, he and other Black students from Africa and the Caribbean came together to talk about their shared experience of being treated as inferior by French colonial culture. From these conversations came the Negritude movement: a literary and political project that celebrated African and Black culture, history, and identity as something to be proud of, not ashamed of. Césaire returned to Martinique and became its most important political figure, serving as mayor of the capital Fort-de-France for nearly fifty years and as a member of the French parliament. He is best known for two works: his poem Notebook of a Return to the Native Land, and his political essay Discourse on Colonialism, published in 1950. He died in 2008 at the age of 94, still celebrated as Martinique's greatest son.

"A civilisation that proves incapable of solving the problems it creates is a decadent civilisation."

Albert Camus 1913-1960 · Algeria / France →

Albert Camus (1913-1960) was a French-Algerian novelist, playwright, and philosopher. He was born in Mondovi in French colonial Algeria into a poor working-class family: his father was killed in the First World War when Camus was less than a year old and his mother was partially deaf and nearly illiterate. He grew up in poverty in Algiers, where he was a gifted student whose high school teacher, Louis Germain, helped him win a scholarship that changed the course of his life. He studied philosophy at the University of Algiers but contracted tuberculosis, which prevented him from taking his final examinations and recurred throughout his life. He worked as a journalist in Algeria and then in Paris, became involved in the French Resistance during the German occupation, and published his most important works in the 1940s: the novel The Stranger, the philosophical essay The Myth of Sisyphus, the plague novel La Peste, and the philosophical essay The Rebel. He received the Nobel Prize for Literature in 1957, when he was forty-three years old. He died in a car accident in 1960. He was forty-six.

"There is but one truly serious philosophical problem, and that is suicide."

Arthur Lewis 1915-1991 · Saint Lucia →

Arthur Lewis was an economist. He was born in 1915 on the Caribbean island of Saint Lucia, which was then a British colony. His parents were teachers who had moved there from Antigua. His father died when Lewis was seven, and his mother raised five sons alone. Lewis was a brilliant student. He won a scholarship to study in Britain at the London School of Economics. He had wanted to be an engineer, but as a Black man in the 1930s he believed no firm would hire him, so he turned to economics and business. He did extremely well. In 1948, at just 33, he became a professor at the University of Manchester. He was the first Black person to hold such a post at a British university. Lewis spent his career studying a single great question: why some countries are rich and others poor, and how poor countries can grow. He also worked in the real world. He advised the new governments of several countries that were becoming independent from colonial rule, including Ghana, and helped set up the Caribbean Development Bank. Later he taught at Princeton University in the United States. In 1979 he was awarded the Nobel Prize in Economics for his work on development. He remains the only Black person to win the prize in economics. He died in 1991 and is buried in Saint Lucia.

"The fundamental cure for poverty is not money but knowledge."

Claude Shannon 1916 - 2001 · United States →

Claude Shannon was an American mathematician and engineer. He invented the field of information theory. His work made the digital age possible. Almost every technology that uses digital signals (mobile phones, the internet, computers, GPS, streaming, modern medical imaging) depends on ideas Shannon developed in the 1930s and 1940s. He was born in 1916 in Petoskey, Michigan, and grew up in the small town of Gaylord. His father was a small-town judge. His mother was a language teacher and school principal. Shannon was a clever, curious child. He built his own telegraph as a teenager, using barbed wire fences to connect with a friend's house. He studied electrical engineering and mathematics at the University of Michigan, graduating in 1936. He went to MIT for graduate work. His 1937 master's thesis, written when he was 21, applied Boolean logic (a form of mathematical logic developed in the 19th century) to electrical circuits. The work showed that any logical operation could be performed by appropriate combinations of switches. The thesis has been called the most important master's thesis of the 20th century. It became the foundation for designing all digital computer hardware. During the Second World War, Shannon worked on cryptography (the science of codes) at Bell Laboratories. He met the British codebreaker Alan Turing during the war. The two men had lunch together regularly when Turing visited the United States. After the war, Shannon stayed at Bell Labs. In 1948, he published A Mathematical Theory of Communication, the founding paper of information theory. He was 32. He continued working at Bell Labs and later at MIT until he developed Alzheimer's disease in the 1990s. He died in 2001.

"Information is the resolution of uncertainty."

Eric Hobsbawm 1917 - 2012 · Egypt / Austria / United Kingdom →

Eric Hobsbawm was a British historian and one of the most influential historians of the 20th century. He wrote about the rise of capitalism, the development of the modern world, and the major political movements of the 19th and 20th centuries. He was a lifelong Marxist and Communist Party member. His writing was clear, ambitious, and read by both academics and general audiences. He was born in Alexandria, Egypt, in 1917. He died in London in 2012, aged 95. He came from a Jewish family. His father was British. His mother was Austrian. He was born in Alexandria where his father worked. The family moved to Vienna, then to Berlin. Both his parents died young. He was orphaned by 14. An aunt brought him to England in 1933, the year Hitler came to power in Germany. His timing was lucky. The move to England saved his life. Most of his Central European Jewish family who stayed behind were eventually killed in the Holocaust. He studied history at Cambridge from 1936. He joined the Communist Party as a young man and remained a member for the rest of his life, despite the party's decline and the revelations of Stalin's crimes. He served in the British army during the Second World War. After the war, he became a lecturer at Birkbeck College, University of London, where he taught for over 50 years. He wrote many books. His most famous are the four-volume series on the modern world: The Age of Revolution (1962), The Age of Capital (1975), The Age of Empire (1987), and The Age of Extremes (1994). Together these books cover European and world history from 1789 to 1991. He also wrote on bandits, on jazz, on nationalism, and on many other subjects. His autobiography Interesting Times came out in 2002. He continued writing into his nineties.

"The dustbin of history is humanity's largest receptacle."

Katherine Johnson 1918 - 2020 · United States (African American) →

Katherine Johnson was an American mathematician. She did the calculations that helped send the first American astronauts into space and to the Moon. She worked at NASA for over 30 years. She was a Black woman in a field that was largely white and male. Her work was central to the success of the early American space programme. She was born in 1918 in White Sulphur Springs, West Virginia. Her birth name was Katherine Coleman. From a young age, she loved counting. She counted everything: steps, dishes, the stars. She was so advanced that she finished primary school by age 10. The local town did not have a high school for Black children. Her father moved the family 200 kilometres so that Katherine and her siblings could attend a school that did. She went on to West Virginia State, a historically Black college, and graduated with degrees in mathematics and French at 18. In 1953 she joined the National Advisory Committee for Aeronautics (NACA), which became NASA in 1958. She was hired as a 'human computer'. Before electronic computers were trusted, dozens of women did mathematical calculations by hand. Black women at NACA were segregated from white women. They worked in a separate building with separate bathrooms. Johnson pushed past these limits. She joined the all-male Flight Research Division. She did calculations for the first American manned space flights. In 1962, before John Glenn orbited Earth, he asked specifically for Johnson to verify the computer's calculations by hand. He trusted her over the machine. She continued at NASA until 1986. She lived to be 101, dying in 2020.

"We will always have STEM with us. Some things will drop out of the public eye and will go away, but there will always be science, engineering, and technology. And there will always, always be mathematics."

Nelson Mandela 1918-2013 · South Africa →

Nelson Rolihlahla Mandela was a South African lawyer, freedom fighter, and statesman. He led the long struggle to end apartheid, the racist system that ruled South Africa from 1948 to 1994. He was born on 18 July 1918 in Mvezo, a small village in the Eastern Cape. He was given the name Rolihlahla, which in Xhosa roughly means 'pulling the branch of a tree' or, informally, 'troublemaker'. A teacher gave him the English name Nelson when he started school. He came from a Thembu royal family. His father died when Nelson was nine, and he was raised at the royal court. He trained as a lawyer in Johannesburg. With his friend Oliver Tambo, he opened the first Black law firm in South Africa in 1952. Black South Africans had almost no rights under apartheid. They could not vote, were forced to live in poor 'townships', and had to carry passes to enter white areas. Mandela joined the African National Congress (ANC) in 1943. He helped lead peaceful campaigns through the 1950s. After the Sharpeville massacre in 1960, when police killed 69 unarmed Black protesters, he changed his mind about non-violence. In 1961 he co-founded Umkhonto we Sizwe (Spear of the Nation), the armed wing of the ANC. He was arrested in 1962 and put on trial for sabotage. In 1964 he was sentenced to life in prison. He served 27 years, mostly on Robben Island. He was released on 11 February 1990. He led the negotiations that ended apartheid. He became South Africa's first democratically elected president in 1994. He died on 5 December 2013, aged 95.

"I have cherished the ideal of a democratic and free society in which all persons live together in harmony and with equal opportunities. It is an ideal which I hope to live for and to achieve. But if needs be, it is an ideal for which I am prepared to die."

G.E.M. Anscombe 1919-2001 · England (born in Ireland) →

Gertrude Elizabeth Margaret Anscombe was a British philosopher. She was one of the most important philosophers writing in English in the 20th century. She was born on 18 March 1919 in Limerick, Ireland, where her father was stationed with the British Army. The family moved back to England soon after. She studied at Sydenham School in south London and then at St Hugh's College, Oxford, from 1937 to 1941. At Oxford she earned the highest degree in classics and philosophy. As a teenager, she read herself into Catholicism and converted, against her Anglican family's wishes. She remained a devout Catholic for the rest of her life. Her religion shaped her philosophy but did not limit it. She was also ferociously independent. As an Oxford undergraduate in 1939, she co-wrote a pamphlet arguing that Britain's entry into the Second World War was not justified. She kept this position even as most of her country and family disagreed. In 1942 she moved to Cambridge to study with Ludwig Wittgenstein, one of the most important philosophers of the 20th century. He became her teacher and friend. She was one of very few students he trusted. When he died in 1951, he named her as one of his three literary executors. She translated his major work, Philosophical Investigations, from German into English in 1953. This translation became the standard English version and is still read today. She married the philosopher Peter Geach in 1941. They had seven children. She held positions at Oxford for almost twenty years, then moved to Cambridge in 1970 to take the chair in philosophy once held by Wittgenstein. She was a striking figure: she wore trousers and men's clothes in an era when this was unusual, smoked cigars, and did not take her husband's name. She died in Cambridge on 5 January 2001, aged 81.

"For men to choose to kill the innocent as a means to their ends is always murder."

Iris Murdoch 1919 - 1999 · Ireland / United Kingdom →

Iris Murdoch was an Irish-British philosopher and novelist. She is one of the most important moral philosophers of the 20th century. She was also one of the most successful British novelists of her time. She published 26 novels alongside her philosophical work. She was born in 1919 in Dublin, Ireland. Her family moved to London when she was very young. She studied classics and ancient philosophy at Oxford from 1938. The Second World War interrupted her studies. She worked for the British Treasury and then for the United Nations relief agency in displaced persons camps in Europe after the war. She saw the human consequences of the war directly. The experience shaped her later thinking about moral life. In 1948 she became a philosophy fellow at St Anne's College, Oxford. She taught there for many years. In 1956 she married John Bayley, a literary critic. The marriage lasted until her death and was unconventional in many ways. She had several intense relationships with both men and women throughout her life, often while married. Her first novel, Under the Net, came out in 1954. The book was successful. She continued writing novels alongside philosophy for the rest of her career. Her novels are full of complicated relationships, moral struggles, and sudden surprising events. Some readers love them. Some find them odd. Her philosophical books include The Sovereignty of Good, one of the most loved short books in 20th-century moral philosophy. In the early 1990s, she developed Alzheimer's disease. The illness slowly destroyed her ability to think and write. She died in 1999, aged 79. Her husband John Bayley wrote a famous memoir about her decline.

"Love is the extremely difficult realisation that something other than oneself is real."

Mary Midgley 1919 - 2018 · United Kingdom →

Mary Midgley was a British moral philosopher. She is one of the most original ethical thinkers of the 20th century. She is best known for her work on animals, evolution, science, and what makes humans morally serious. She wrote in plain language for general readers as well as academic ones. She was born in 1919 in London. She died in 2018, aged 99. She was active and writing books well into her 90s. She studied classics and philosophy at Oxford from 1938. She belonged to a remarkable generation of women philosophers there, including Iris Murdoch, Elizabeth Anscombe, and Philippa Foot. They all attended Oxford during the Second World War, when many male students had been called away. The reduced male presence created an unusual opportunity. Together these four women, sometimes called the Oxford Quartet, would later help reshape Anglo-American moral philosophy. After Oxford, Midgley married the philosopher Geoffrey Midgley in 1950. They moved to Newcastle in northern England, where Geoffrey took a teaching post. Mary raised three sons. She did not publish her first book until she was 59. Beast and Man came out in 1978. The book was a major statement on the relationship between human beings and other animals. It launched her late and remarkable writing career. From 1978 until her death 40 years later, she wrote book after book. She criticised what she saw as scientific over-reach by figures like Richard Dawkins. She wrote about ethics, religion, evolution, and the role of myth in scientific thinking. She became known as a sharp, clear, plain-spoken critic of bad ideas. She finished her last book just months before her death at 99.

"Philosophy is like plumbing. It is something nobody notices until it goes wrong."

Eduardo Mondlane 1920-1969 · Mozambique (Portuguese East Africa) →

Eduardo Chivambo Mondlane was a Mozambican anthropologist and revolutionary who founded FRELIMO, the movement that led Mozambique's independence struggle against Portugal. He was born in 1920 in N'wajahani, in the Gaza province of southern Mozambique, then a Portuguese colony. He was the fourth of sixteen sons of a Tsonga chief. The colonial school system was almost only for Europeans, but Mondlane gained entry through Swiss Presbyterian mission schools. He worked as a shepherd as a boy. Education in his country was almost impossible; he had to leave to get any. His academic journey was extraordinary. He studied in South Africa at Witwatersrand University, but was expelled in 1949 for opposing the new apartheid regime. He went briefly to Lisbon, then to Oberlin College in Ohio in 1951, then to Northwestern University in Illinois, where he earned a PhD in sociology in 1960. He worked at the United Nations from 1957, then taught anthropology at Syracuse University in the early 1960s. He married Janet Johnson, a white American woman from Indiana. In 1962 he left academic life. He went to Dar es Salaam in Tanzania to help unite three Mozambican exile groups into a single movement. The result was FRELIMO, the Front for the Liberation of Mozambique. He became its first president. Under his leadership FRELIMO began the armed struggle against Portuguese rule in 1964. He wrote his book The Struggle for Mozambique while leading the war. On 3 February 1969, in Dar es Salaam, he opened a parcel addressed to him. It contained a bomb. He was killed instantly. The Portuguese secret police, PIDE, is widely believed to have been responsible. He was 48. Mozambique gained independence six years later, in 1975.

"We must build a society that is free from the exploitation of man by man."

Oodgeroo Noonuccal 1920 - 1993 · Australia (Noonuccal people, Stradbroke Island/Minjerribah) →

Oodgeroo Noonuccal was an Aboriginal Australian poet, activist, teacher, and artist. She was the first Aboriginal Australian to publish a book of poetry. Her work helped shape modern Aboriginal political and cultural identity. She was born in 1920 on Stradbroke Island, off the coast of Queensland in eastern Australia. The island is called Minjerribah in her language. Her birth name was Kathleen Jean Mary Ruska. In 1988, the year of Australia's bicentennial, she changed her name to Oodgeroo Noonuccal. 'Oodgeroo' is the Noonuccal word for 'paperbark', a tree common on her island. 'Noonuccal' is the name of her people. The name change was a public political act. She wanted a name that came from her own land, not from English colonisers. She grew up in poverty under harsh laws that controlled Aboriginal lives. Aboriginal Australians could not vote, marry without permission, or move freely. Her family lived on government rations. She left school at 13 to work as a domestic servant in white households. During World War II she joined the Australian Women's Army Service, one of the first Aboriginal women to do so. In 1964 she published her first poetry book, We Are Going. It sold out quickly. She became a major activist for Aboriginal rights. She helped lead the campaign for the 1967 referendum that finally allowed Aboriginal Australians to be counted as citizens. She wrote books for children, painted, and ran a cultural centre on her island. She died in 1993, aged 72. Her son Vivian taught and worked alongside her.

"We are nature and the past, all the old ways gone now and scattered."

Ravi Shankar 1920 - 2012 · India (later based in California) →

Ravi Shankar was an Indian musician. He played the sitar, a long-necked string instrument from northern India. He is the most famous Indian classical musician of the 20th century. He was born in 1920 in the city of Varanasi (also called Banaras), in northern India. He came from a Bengali Brahmin family. His father was a lawyer and scholar who left the family when Ravi was young. His older brother Uday Shankar was a famous dancer who toured the world with an Indian dance company. As a boy, Ravi joined his brother's troupe. He travelled across Europe and America as a young dancer and musician. He met many Western artists in this period. At 18, he made a serious decision. He left his brother's company and went to study music seriously with a great teacher named Allauddin Khan in central India. He spent seven years in Khan's home, training intensively in the strict Indian classical tradition. This kind of long apprenticeship was traditional. The teacher was almost a parent. Ravi later married Khan's daughter, Annapurna Devi, who was also a brilliant musician. From the 1950s onwards, his career grew rapidly. He performed across India, then in Europe and America. In the 1960s he became famous in the West, partly because of his friendship with George Harrison of the Beatles. He continued performing into his nineties. He had a complex personal life, with several partners and four children, including the musicians Anoushka Shankar and Norah Jones. He died in San Diego in 2012, aged 92.

"Our music is not entertainment. It is much more."

Rosalind Franklin 1920-1958 · England, United Kingdom →

Rosalind Franklin (1920-1958) was a British chemist and X-ray crystallographer. She was born in London into a prominent Jewish family and showed exceptional scientific ability from childhood. She studied chemistry at Cambridge University and then worked in Paris, where she became expert in X-ray crystallography: a technique that uses X-rays to determine the three-dimensional structure of molecules. She returned to England in 1951 to work at King's College London, where she was assigned to study the structure of DNA. Working with extraordinary precision, she produced some of the clearest X-ray photographs of DNA ever taken, including the famous Photo 51, which showed clear evidence of the double-helix structure. This photograph was shown to James Watson without her knowledge or permission by her colleague Maurice Wilkins. Watson and Francis Crick, who also had access to Franklin's unpublished data through other channels, used this information to build their model of DNA. Their paper announcing the double-helix structure was published in Nature in April 1953. Franklin was not credited as a contributor. She went on to do brilliant work on the structure of viruses at Birkbeck College before dying of ovarian cancer in 1958 at the age of thirty-seven. Watson, Crick, and Wilkins received the Nobel Prize for the discovery of DNA's structure in 1962.

"Science and everyday life cannot and should not be separated."

John Rawls 1921-2002 · United States →

John Rawls (1921-2002) was an American political philosopher, widely regarded as the most important political philosopher of the twentieth century. He was born in Baltimore, Maryland, and studied at Princeton University. He served in the Pacific during the Second World War, an experience that shook his earlier religious faith and deepened his concern with questions of justice: he witnessed the bombing of Hiroshima from close range and refused a commission that would have required him to participate in such actions again. He spent most of his academic career at Harvard University, where he taught from 1962 until his retirement. His major work, A Theory of Justice, published in 1971, transformed academic political philosophy and became one of the most discussed books of the century. In it he developed a systematic theory of justice grounded in the idea of a social contract among free and equal citizens choosing principles of justice from behind a veil of ignorance. His later work, Political Liberalism (1993) and The Law of Peoples (1999), developed and revised his ideas in response to criticism. He died in 2002.

"Justice is the first virtue of social institutions, as truth is of systems of thought."

Paulo Freire 1921–1997 · Brazil, Latin America →

Paulo Freire (1921–1997) was a Brazilian educator and thinker. He grew up during a time of great poverty and saw how many poor people could not read or write. He believed that education was not just about learning facts — it was about understanding your world and changing it. His most famous book, Pedagogy of the Oppressed, has been read by teachers and activists all over the world.

"Education either functions as an instrument to bring about conformity or it becomes the practice of freedom."

Howard Zinn 1922-2010 · United States →

Howard Zinn (1922-2010) was an American historian, playwright, and activist. He was born in Brooklyn, New York, to Jewish immigrant parents who worked in factories, and grew up in poverty during the Great Depression. He served as a bombardier in the United States Army Air Forces during the Second World War, an experience that turned him against the use of mass violence in war. After the war he studied history at Columbia University under the GI Bill and became a professor. He taught at Spelman College, a historically Black women's college in Atlanta, where he became deeply involved in the civil rights movement, before moving to Boston University. In 1980 he published A People's History of the United States, which retold American history from the perspectives of indigenous people, enslaved Africans, women, immigrants, and working people rather than from the perspective of political and military leaders. The book has sold over two million copies and has been continuously in print. He was also a prominent anti-war activist, opposing American involvement in Vietnam, the Gulf War, and the Iraq War. He died in 2010 at the age of eighty-seven.

"I thought it important to put back in the historical record the countless struggles of ordinary people who fought against injustice."

Thomas Kuhn 1922-1996 · United States →

Thomas Kuhn (1922-1996) was an American philosopher and historian of science. He studied physics at Harvard University and then became interested in the history of science: how scientific ideas had actually developed over time, rather than how scientists described the process. What he found surprised him. Science did not progress smoothly by adding new facts one by one. Instead, it went through long periods of normal work, interrupted by sudden, dramatic changes when the whole way of thinking about a subject was replaced. He described this in his book The Structure of Scientific Revolutions, published in 1962. It became one of the most widely read and discussed books in the history of science. Kuhn spent his career at universities including Harvard, Berkeley, Princeton, and the Massachusetts Institute of Technology. His ideas changed not only how people think about science but how they think about knowledge and change in many other fields too.

"Normal science does not aim at novelties of fact or theory and, when successful, finds none."

Cheikh Anta Diop 1923–1986 · Senegal →

Cheikh Anta Diop (1923–1986) was a Senegalese historian, anthropologist, physicist, and political thinker — one of the most wide-ranging and controversial African intellectuals of the 20th century. Born in Diourbel, Senegal, he studied in Paris where he pursued doctorates in both physics and the humanities. His central intellectual project was to demonstrate that ancient Egypt was an African civilisation and that the origins of Greek philosophy, science, and culture lay substantially in Egypt — a claim that challenged the European history of civilisation that had been built on the assumption of African cultural inferiority. He founded the Cheikh Anta Diop University in Dakar, which bears his name. He was a pan-Africanist, a scientist, and a linguist as well as a historian.

"The African who has understood us is the one who, after reading our works, feels that a new element has come to enrich his culture."

E.P. Thompson 1924-1993 · England, United Kingdom →

E.P. Thompson (1924-1993) was a British historian, socialist activist, and peace campaigner. His full name was Edward Palmer Thompson. He was born in Oxford into a family with strong connections to India: his father had been a Methodist missionary and a friend of Rabindranath Tagore, and Thompson grew up with an internationalist outlook. He studied at Cambridge, served in the Second World War in Italy, and then worked as an adult education tutor for the Workers Educational Association in Yorkshire, teaching history to working-class communities. This experience of teaching history to people whose own ancestors rarely appeared in it profoundly shaped his work. He left the Communist Party of Great Britain in 1956 following the Soviet invasion of Hungary and became one of the founders of the New Left in Britain. His monumental work The Making of the English Working Class, published in 1963, transformed how historians thought about their subject. He was also a leading figure in the European Nuclear Disarmament movement in the 1980s. He died in 1993.

"I am seeking to rescue the poor stockinger, the Luddite cropper, the obsolete hand-loom weaver, the utopian artisan and even the deluded follower of Joanna Southcott, from the enormous condescension of posterity."

James Baldwin 1924-1987 · United States →

James Baldwin (1924-1987) was an American novelist, essayist, playwright, and activist. He was born in Harlem, New York, the eldest of nine children. His mother's partner, David Baldwin, a storefront preacher, was a powerful and terrifying figure in his childhood, and the tensions between religious passion and the world's brutality run through all of Baldwin's work. He grew up in poverty in Harlem during the Depression, was a gifted student who discovered books and libraries as a way out of the world around him, and became a junior preacher at fourteen. By seventeen he had left the church, though its language and rhythms never left his writing. In 1948, at twenty-four, he left the United States for Paris, driven away by the daily humiliations and the constant threat of racial violence. He spent much of his adult life in France but never stopped writing about and returning to America. His first novel, Go Tell It on the Mountain, was published in 1953, and was followed by Giovanni's Room, Another Country, and Tell Me How Long the Train's Been Gone, among others. His essay collections — Notes of a Native Son, Nobody Knows My Name, The Fire Next Time, and No Name in the Street — are among the most important works of American prose in the twentieth century. He died in Saint-Paul-de-Vence in France in 1987.

"Not everything that is faced can be changed, but nothing can be changed until it is faced."

Frantz Fanon 1925–1961 · Martinique / Algeria / West Africa →

Frantz Fanon (1925–1961) was a political activist, psychiatrist, philosopher, and writer from Martinique, a French Caribbean island. He worked as a doctor in Algeria during the Algerian war for independence from France. He wrote about the psychological damage that colonialism causes — not just to bodies and communities, but to the minds and sense of identity of colonised people. He died of leukaemia at the age of 36, but his ideas have shaped political thought, education, and psychology across the world.

"I am not a prisoner of History. I should not seek there for the meaning of my destiny."

Patrice Lumumba 1925-1961 · Democratic Republic of the Congo →

Patrice Émery Lumumba was a Congolese political leader and the first Prime Minister of the independent Democratic Republic of the Congo. He was born in 1925 in Onalua, a village in the Kasai region. He came from the Tetela people. He was educated at mission schools and worked as a postal clerk and then as a beer salesman in Stanleyville (now Kisangani) and Léopoldville (now Kinshasa). During the 1950s, he became active in politics. He wrote articles, gave speeches, and helped found trade unions and cultural groups. In 1958, he helped create the Mouvement National Congolais, a party that wanted independence from Belgium for the whole country, not for one region only. He attended the All-African Peoples' Conference in Accra, Ghana, and met leaders like Kwame Nkrumah. Belgium agreed to give Congo independence on 30 June 1960. Lumumba became Prime Minister. He was 35 years old. His independence day speech, delivered in the presence of the Belgian King, shocked the world with its honesty about colonial violence. Within weeks, the new country fell into crisis. Parts of the country tried to break away. Belgian troops returned. Lumumba asked the United Nations and then the Soviet Union for help. Western powers, afraid of losing Congo's minerals, worked against him. He was removed from office, arrested, and handed over to his enemies. He was killed on 17 January 1961, aged 35.

"We have known the mockery, the insults, the blows we had to endure morning, noon, and night because we were Negroes."

Clifford Geertz 1926-2006 · United States →

Clifford Geertz (1926-2006) was an American cultural anthropologist and one of the most influential social scientists of the twentieth century. He was born in San Francisco and served in the US Navy during the Second World War before studying at Antioch College and Harvard, where he received his PhD in 1956. He conducted fieldwork in Java, Bali, and Morocco — societies that became the material for his most important work. He spent most of his career at the University of Chicago and then at the Institute for Advanced Study in Princeton, where he worked from 1970 until his death. His most important works include The Religion of Java (1960), Agricultural Involution (1963), The Interpretation of Cultures (1973), Negara: The Theatre State in Nineteenth-Century Bali (1980), and Local Knowledge (1983). He was awarded the National Book Critics Circle Award in 2000 for Available Light: Anthropological Reflections on Philosophical Topics. He died in 2006.

"Man is an animal suspended in webs of significance he himself has spun. I take culture to be those webs."

Michel Foucault 1926-1984 · France →

Michel Foucault was a French philosopher and historian. He was one of the most influential thinkers of the 20th century. He was born on 15 October 1926 in Poitiers, France, into a middle-class family. His father was a surgeon. He was expected to follow his father into medicine but chose philosophy instead. This caused serious tension at home. As a young man, he struggled with depression and attempted suicide at least once while a student. He studied at the prestigious École Normale Supérieure in Paris in the late 1940s, where his classmates included future major thinkers like Louis Althusser. After university, he worked in Sweden, Poland, Germany, and Tunisia before returning to France. He completed his doctorate in 1961. The thesis, published as Madness and Civilization, was the first of his major books. He held teaching positions at several French universities and in 1970 was elected to the Collège de France, the most prestigious academic institution in France. His yearly lectures there, now published in full, drew large audiences. He wrote a series of major books including The Order of Things (1966), Discipline and Punish (1975), and the three volumes of The History of Sexuality (1976-1984). He was openly gay in a time when this was still unusual for a public intellectual. He was politically active, involved in campaigns around prison reform, gay rights, and opposition to French immigration policy. He died of AIDS on 25 June 1984 in Paris, aged 57. He was one of the first major public figures to die of the disease.

"Where there is power, there is resistance."

Noémia de Sousa 1926-2002 · Mozambique (Portuguese East Africa) →

Noémia de Sousa was a Mozambican poet and journalist who is widely called 'the mother of Mozambican poetry'. She was born Carolina Noémia Abranches de Sousa Soares in 1926 in Catembe, a coastal village just across the bay from what was then Lourenço Marques and is now Maputo. Her father was of mixed race and her mother had Portuguese roots; she grew up between worlds, neither fully accepted by colonial European society nor straightforwardly identified with the African majority. The position shaped her writing. Her father died when she was eight. Two of her brothers were already studying in Lisbon. She finished her own studies at a commercial school in Lourenço Marques. By her late teens she was already writing poetry and political journalism for O Brado Africano, the most important pro-African newspaper in colonial Mozambique. She edited the women's pages. Her poems began to circulate in literary circles across the Portuguese-speaking world. She wrote her major poetic work in just three years, between 1948 and 1951, when she was in her early twenties. In 1951 the Portuguese colonial authorities exiled her to Portugal. She was 25. She would never live in Mozambique again. She lived in Lisbon from 1951 to 1964, then in Paris from 1964 to 1973, working as a translator and journalist throughout. She returned to Lisbon after the 1974 Carnation Revolution. Her single poetry collection, Sangue Negro (Black Blood), circulated in samizdat form for decades. It was finally published in book form by the Mozambican Writers' Association in 2001, when she was 75. She died in Cascais, Portugal, in 2002. Her body was returned to Mozambique.

"If you want to understand me, come and bend over my African soul."

Thich Nhat Hanh 1926 - 2022 · Vietnam (long exile in France) →

Thich Nhat Hanh was a Vietnamese Buddhist monk, teacher, poet, and peace activist. He is one of the most important Buddhist teachers of the modern world. Many readers in the West first met Buddhist ideas through his books. He was born in 1926 in central Vietnam, in what was then a French colony. He became a monk at the age of 16. He took the religious name Thich Nhat Hanh. 'Thich' is the religious surname taken by all Vietnamese Buddhist monks and nuns, after the family name of the Buddha. He studied Buddhism in Vietnam and later studied comparative religion at Princeton University in the United States. During the Vietnam War (1955-1975), he founded a movement called Engaged Buddhism. Monks, nuns, and lay people worked to help villagers caught in the war. They rebuilt destroyed villages, set up schools, and cared for refugees. They refused to take sides between the Communist North and the American-backed South. Both sides treated this as betrayal. In 1966, Thich Nhat Hanh travelled to America to ask the United States to end the war. He met Martin Luther King Jr., who later nominated him for the Nobel Peace Prize. The Vietnamese government refused to let him return home. He lived in exile for 39 years. He founded a monastery in southern France called Plum Village in 1982. From there he wrote over 100 books and travelled the world teaching mindfulness. In 2018 he returned to Vietnam to die in the temple where he had become a monk. He died there in 2022, aged 95.

"The present moment is the only moment available to us, and it is the door to all moments."

Hans Küng 1928-2021 · Switzerland →

Hans Küng was a Swiss Catholic priest and theologian. A theologian is a scholar who studies the meaning and history of religion. He was born in 1928 in Sursee, a small town in central Switzerland. He died in 2021 in Tübingen, Germany, at the age of 93. Küng studied for the priesthood in Rome and was ordained a Catholic priest in 1954. From 1960 he was a professor at the University of Tübingen in Germany, where he taught for the rest of his career. In 1962 the Pope chose him as one of the youngest expert advisers at the Second Vatican Council. This was a great meeting of Catholic bishops that aimed to bring the Church into the modern world. Küng was one of the most famous and controversial Catholic thinkers of the twentieth century. He challenged the official teaching that the Pope could not be wrong on matters of faith and morals. He also criticised compulsory celibacy for priests and the ban on women priests. In 1979 the Vatican withdrew his licence to teach as a Catholic theologian. He kept his post at Tübingen and remained a Catholic priest. In his later years he led a global project on shared ethics across religions.

"Küng challenged the Catholic teaching that the Pope cannot be wrong on matters of faith and morals."

Maya Angelou 1928-2014 · United States →

Maya Angelou (1928-2014) was an American poet, memoirist, essayist, and public figure whose seven-volume autobiography and body of poetry made her one of the most widely read writers of the twentieth century. She was born Marguerite Annie Johnson in St Louis, Missouri. After her parents' marriage ended, she and her brother Bailey were sent to live with their grandmother in the segregated town of Stamps, Arkansas. At seven, during a visit to her mother, she was raped by her mother's boyfriend; after testifying against him, she stopped speaking for nearly five years. She returned to Stamps and, under the patient attention of a neighbour who introduced her to literature, gradually found her voice again. She left school at sixteen, became San Francisco's first Black streetcar conductor, and gave birth to her son Guy that same year. Over the following decades she worked as a singer, dancer, actor, journalist, activist, and eventually writer. She lived in Ghana in the 1960s and worked closely with both Malcolm X and Martin Luther King Jr in the American civil rights movement. In 1969 she published I Know Why the Caged Bird Sings, the first volume of her autobiography, which became one of the most widely taught books in American schools and has been translated into many languages. She published six further autobiographical volumes, ten books of poetry, essays, plays, and children's books. She recited her poem On the Pulse of Morning at President Bill Clinton's 1993 inauguration, the first inaugural poem in over thirty years. She taught for decades at Wake Forest University in North Carolina and died there in 2014, aged eighty-six.

"I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel."

Natalie Zemon Davis 1928-present · United States / Canada →

Natalie Zemon Davis (born 1928) is an American-Canadian historian. She was born in Detroit, Michigan, into a Jewish family, and studied history at Smith College, Radcliffe, and Michigan. She spent most of her academic career at Princeton University and the University of Toronto. In the 1950s she and her husband were investigated by the House Un-American Activities Committee during the McCarthy era, and she was unable to get an academic job for some years because of this. This experience of political persecution, and its arbitrariness, shaped her sensitivity to the experience of ordinary people navigating systems of power they could not control. She is best known for her books The Return of Martin Guerre (1983) and Women on the Margins (1995), but her broader contribution to historiography, how historians should do history, has been equally important. She brought together history and anthropology, paying close attention to how people at different times and places understood and narrated their own experiences, attending to the lives of women, artisans, Jews, and other marginal people who rarely appeared in conventional histories, and using close reading of documents to reconstruct the inner lives and cultural worlds of people who left few records. She has continued to work and teach into her nineties.

"What I offer you is in part my invention, but held tightly in check by the voices of the past."

Noam Chomsky b. 1928 · United States →

Avram Noam Chomsky (born 1928) is an American linguist, philosopher, and political commentator whose work has changed the study of language and who has also become one of the most widely known political writers of his generation. He was born in Philadelphia, Pennsylvania, to Jewish immigrant parents from Ukraine and Belarus. His father was a respected Hebrew scholar who taught his children to love language and books. Noam began writing about international affairs at the age of ten, in a school newspaper article about the rise of fascism in Spain. He entered the University of Pennsylvania at sixteen and studied linguistics, mathematics, and philosophy. His teacher Zellig Harris introduced him to structural linguistics and also to radical politics. In 1955 Chomsky joined the faculty of the Massachusetts Institute of Technology (MIT), where he remained for more than fifty years. His 1957 book Syntactic Structures changed the field of linguistics almost overnight. His ideas about how the human mind makes language possible started what is now called the cognitive revolution. From the 1960s onwards, he became as well known for his political writings as for his linguistics. He was an early and persistent critic of the Vietnam War. In 1967 he published an influential essay called The Responsibility of Intellectuals, in which he argued that educated people have a duty to tell the truth about what their governments do. He has written dozens of books on language and dozens more on politics, power, and the media. He has been arrested several times for protesting against war. In 1988 he co-wrote Manufacturing Consent with Edward Herman, a book about how mainstream media serve established power. He is one of the most cited living scholars in several fields. Some colleagues treat him as a hero; others criticise his linguistic theories, his political views, or both. His productivity has continued into his nineties. He now holds a chair at the University of Arizona.

"Colorless green ideas sleep furiously."

Fazlur Rahman Khan 1929-1982 · Bangladesh / United States →

Fazlur Rahman Khan (1929-1982) was a Bangladeshi-American structural engineer whose innovations transformed how tall buildings are designed and made the modern generation of skyscrapers possible. He was born in Dhaka, then part of British India and later the capital of Bangladesh, to a family of educators. His father was a mathematics teacher who later became director of public instruction for East Bengal. Khan studied civil engineering at the Bengal Engineering College in Calcutta and at Dhaka University. In 1952 he travelled to the United States on a Fulbright scholarship, earning two master's degrees and a doctorate at the University of Illinois by 1955. He joined the Chicago firm of Skidmore, Owings and Merrill, where he spent his entire career and became a partner in 1966. Working closely with architects including Bruce Graham, he designed two of the most important skyscrapers of the twentieth century: the John Hancock Center, completed in 1969, and the Sears Tower, completed in 1973 and the world's tallest building for twenty-five years. He also designed Hajj Terminal at Jeddah airport, one of the largest fabric roof structures in the world. He died of a heart attack in Saudi Arabia in 1982, at only fifty-three. His tubular design systems and his broader philosophy of structural efficiency have become the foundation on which nearly every tall building built since has been constructed.

"The technical man must not be lost in his own technology. He must be able to appreciate life, and life is art, drama, music, and most importantly, people."

Tayeb Salih 1929-2009 · Sudan →

Tayeb Salih (al-Tayyib Salih) was a Sudanese novelist, short-story writer, and journalist, widely considered one of the most important Arab writers of the twentieth century. He was born on 12 July 1929 in the village of Karmakol, on the Nile near al-Dabbah in northern Sudan. He came from a family of small farmers and religious teachers. He attended a Quranic school as a boy, then continued at Gordon Memorial College in Khartoum (which became the University of Khartoum), where he took a Bachelor of Science degree. He planned to work in agriculture. After a brief period as a schoolteacher in Sudan he won a scholarship to study in London. He never returned to live permanently in Sudan. He spent the rest of his working life abroad, primarily in Britain. He worked for over a decade at the BBC's Arabic Service, eventually becoming Head of Drama. He served as Director-General of Information in Doha, Qatar. He spent his last working years at UNESCO in Paris, including time as UNESCO's representative for the Arab Gulf states. For more than a decade he wrote a weekly column for the London-based Arabic magazine al-Majalla, ranging widely across Arabic and world literature. In 1965 he married Julia Maclean, a Scottish woman; they had three daughters and lived in southwest London. His literary output was small but extraordinarily influential. He published the short story collection A Handful of Dates (1964), the novella The Wedding of Zein (1966), the masterpiece Season of Migration to the North (Mawsim al-Hijra ila al-Shamal, 1966), and the two-part novel Bandarshah (Daw al-Bayt, 1971; Maryud, 1976). In 2001 the Damascus-based Arab Literary Academy named Season of Migration to the North the most important Arabic novel of the twentieth century. He died of kidney failure in London on 18 February 2009 at age 79. His body was returned to Sudan and buried at al-Bakri Cemetery in Omdurman.

"I returned, ladies and gentlemen, after a long absence, seven years to be exact, during which I was studying in Europe. I learned much and many things changed, but that is another story."

Ursula K. Le Guin 1929-2018 · United States →

Ursula Kroeber Le Guin was an American novelist, essayist, and poet. She is one of the most important writers of science fiction and fantasy in any language. She was born on 21 October 1929 in Berkeley, California. Her parents were unusual. Her father, Alfred Kroeber, was a famous anthropologist who had studied the native peoples of California. Her mother, Theodora Kroeber, was a writer who later produced Ishi in Two Worlds, a book about the last survivor of a California tribe. Their home was full of books, Indigenous friends, and long conversations about other cultures. This upbringing shaped everything Le Guin later wrote. She studied at Radcliffe College and at Columbia University, where she earned a master's degree in French and Italian Renaissance literature. In 1953, travelling by ship to France on a Fulbright scholarship, she met the historian Charles Le Guin. They married and eventually settled in Portland, Oregon, where they raised three children. She lived in Portland for most of her life. She began publishing fiction in the early 1960s. Her breakthrough came with A Wizard of Earthsea (1968), a fantasy novel about a young wizard. It has never gone out of print. The following year, The Left Hand of Darkness (1969) imagined a world where people are neither male nor female most of the time. The Dispossessed (1974) imagined an anarchist society on a moon, seen in dialogue with a capitalist society on the planet it orbits. These three books alone would have made her a major writer. She wrote more than twenty novels, many stories, essays, and poems over six decades. She also translated. Her English version of the Daodejing, the ancient Chinese Daoist text, was published in 1997 and is one of the most admired. She died on 22 January 2018 in Portland, aged 88. She had been writing almost until the end.

"We live in capitalism. Its power seems inescapable. So did the divine right of kings. Any human power can be resisted and changed by human beings."

Chinua Achebe 1930-2013 · Nigeria, West Africa →

Chinua Achebe (1930-2013) was a Nigerian novelist, poet, critic, and professor. He was born Albert Chinualumogu Achebe in Ogidi, in southeastern Nigeria, into an Igbo family. His father was a Christian teacher and Achebe grew up between two worlds: the Igbo traditions of his community and the colonial educational system that his father served. He studied at the University College of Ibadan, which was part of the University of London at the time, and began writing his first novel while still a student. Things Fall Apart, published in 1958 on the eve of Nigerian independence, told the story of Okonkwo, an Igbo man, and his community's encounter with British colonialism. It has become the most widely read African novel ever published, translated into over sixty languages and read by millions of people worldwide. Achebe also wrote several other novels, poetry, essays, and children's books, and taught at universities in Nigeria, the United States, and elsewhere. His essay collection Morning Yet on Creation Day and his later essays in Home and Exile are essential statements of his views on African literature and its relationship to colonialism. He died in 2013 at the age of eighty-two.

"Until the lions have their own historians, the history of the hunt will always glorify the hunter."

Jacques Derrida 1930-2004 · France (born in French Algeria) →

Jacques Derrida was a French philosopher. He is best known for a way of reading texts called deconstruction. He was born on 15 July 1930 in El-Biar, a small town near Algiers, in what was then French Algeria. His family was Sephardic Jewish. They had lived in Algeria for many generations. French was the language spoken at home. In 1942, when Derrida was twelve, his life changed. The Vichy government in France had passed anti-Jewish laws. These laws reached Algeria too. On the first day of school that year, he was told he could not come back. He was sent away because he was Jewish. He did not attend school for a whole year. He later said this moment marked him for life. After the war, he returned to school. He read hungrily. He discovered Rousseau, Nietzsche, and Sartre. In 1949 he moved to Paris. After two tries, he got into the École Normale Supérieure in 1952. This is France's top university for philosophy. He met great teachers and students there. He also met his future wife, Marguerite. He published his first major books in 1967. There were three of them in one year: Of Grammatology, Writing and Difference, and Speech and Phenomena. These books made him famous, first in France and then around the world. He taught in Paris and at many universities in the United States. He wrote more than forty books in total. He died on 9 October 2004 of pancreatic cancer, aged 74.

"There is nothing outside the text."

Pierre Bourdieu 1930-2002 · France →

Pierre Bourdieu (1930-2002) was a French sociologist whose work on class, culture, and power made him one of the most influential social scientists of the second half of the twentieth century. He was born in the village of Denguin in the Béarn region of south-western France, close to the Pyrenees mountains. His family was not wealthy. His father had left school young and worked as a postal employee and then as a small farmer. His mother was a country woman from a similar background. Bourdieu was a clever pupil, and his teachers helped him move up through the French education system — first to the lycée in Pau, then to the elite preparatory classes in Paris, and finally to the prestigious École Normale Supérieure, where he studied philosophy alongside Jacques Derrida and other future major thinkers. His country origins in a Paris of educated elites shaped his whole life and work. He always felt partly out of place in elite circles, and this experience of not quite belonging gave him a special eye for how social distinction actually works. After finishing his studies, he was sent to Algeria as a French army conscript in 1955, during the war for Algerian independence. The experience changed him. He saw colonial oppression first-hand, stayed on to do fieldwork as a sociologist-anthropologist after his military service, and produced his first books about Algerian society under French rule. He returned to France in 1960 and began building the distinctive approach that would occupy the rest of his career. He held posts at Lille and Paris before becoming professor at the Collège de France in 1981 — the highest academic position in France. He founded the Centre for European Sociology and a research journal, both of which became centres of major work. His books include Distinction (1979) on taste and class, Homo Academicus (1984) on the sociology of academia, The Rules of Art (1992) on the literary field, and many others. In his last years he became increasingly politically active, particularly in opposition to what he called neoliberal policies across Europe. He died in Paris in 2002 at the age of seventy-one. His influence on sociology, education, cultural studies, and political theory has continued to grow since his death.

"Taste classifies, and it classifies the classifier."

Tu Youyou 1930-present · China →

Tu Youyou is a Chinese medical scientist. In 2015 she won the Nobel Prize in Physiology or Medicine for discovering artemisinin, a malaria drug that has saved millions of lives. She was born on 30 December 1930 in Ningbo, a city on China's east coast. Her family valued education. As a teenager, Tu caught tuberculosis and had to take two years off school. The experience pushed her toward medicine. When she returned to school, she knew she wanted to help fight disease. She studied at Beijing Medical College and graduated in 1955. She then joined the Institute of Materia Medica at the Academy of Traditional Chinese Medicine. From 1959 to 1962 she took a special course that taught modern-trained scientists about traditional Chinese medicine. This combination shaped the rest of her career. In 1969, at age 39, she was put in charge of a research team on a secret Chinese government project called Project 523. The goal was to find a new malaria treatment. Over the next few years, Tu and her team worked through thousands of traditional herbal remedies. She found her answer in a 1,600-year-old Chinese medical book. The compound she isolated, now called artemisinin, became one of the most important drugs of the twenty-first century. She did this work without a PhD, without any study abroad, and without membership in the Chinese Academy of Sciences. Some Chinese call her the 'three-nos professor'. She was promoted to senior researcher in 1980. She is still active at the China Academy of Chinese Medical Sciences.

"A bunch of qinghao; soak in two sheng of water; wring out the juice and drink it all."

Albert Maori Kiki 1931-1993 · Papua New Guinea →

Sir Albert Maori Kiki was a Papua New Guinean pathologist, trade unionist, politician, and writer. He was a co-founder of the Pangu Pati (Pangu Party), Papua New Guinea's first major political party, and served as the country's first Deputy Prime Minister from 1975 to 1977. His autobiography, Ten Thousand Years in a Lifetime (1968), was the first major book to come out of Papua New Guinea written by an indigenous author and remains a foundational text of Pacific literature. He was born on 21 September 1931 in Orokolo Village, Gulf Province, in what was then the Territory of Papua under Australian administration. He was raised in his Elema people's traditional culture and in the Protestant faith of the London Missionary Society. He later wrote that he had completed his first traditional initiation in the eravo (men's ceremonial house) before the colonial administration's pressure caused such structures to be destroyed; by the time he was old enough for the second initiation, the eravo no longer existed. He was selected by Dr John Gunther, the Australian Director of Health, as one of a small group of promising students to study medicine at the Suva Medical School in Fiji. He failed his medical exams and was redirected into a pathology technician course. He returned to PNG and worked as a laboratory technician at Ela Beach Native Hospital. He became Papua New Guinea's first indigenous pathology technician. In 1958 he married Elizabeth Arivu Miro, a Roman Catholic, in one of the first 'mixed' Protestant-Catholic marriages in the Territory. He helped found the first trade union in Papua New Guinea, then in 1967 was a co-founder of the Pangu Pati. He became its national secretary. After the 1972 elections he entered the House of Assembly. He served as Minister for Lands and Environment under Michael Somare. When PNG became independent on 16 September 1975, he became its first Deputy Prime Minister. He held the role until 10 August 1977, when he was succeeded by Julius Chan. He was knighted as Sir Albert. He died in Port Moresby on 13 March 1993, aged 61.

"I have lived ten thousand years in one lifetime."

Toni Morrison 1931-2019 · United States →

Toni Morrison (1931-2019) was an American novelist, essayist, editor, and professor. She was born Chloe Ardelia Wofford in Lorain, Ohio, into a Black working-class family with deep roots in African American storytelling traditions. She studied at Howard University and Cornell, and worked for many years as an editor at Random House, where she championed and shaped major works of African American literature. She began writing fiction in her thirties, while raising two children alone after her marriage ended. Her first novel, The Bluest Eye, was published in 1970. She went on to write ten novels in all, each one formally adventurous and morally demanding. Beloved (1987), her most celebrated work, is based on the true story of an enslaved woman who killed her daughter rather than allow her to be returned to slavery. Song of Solomon, Sula, Jazz, and Paradise each explore different dimensions of Black American life and history with extraordinary formal invention. She also wrote important critical essays, most notably Playing in the Dark: Whiteness and the Literary Imagination (1992), which examined how African American presence had shaped and was systematically ignored in American literature. She received the Nobel Prize for Literature in 1993 and the Presidential Medal of Freedom in 2012. She died in 2019 at the age of eighty-eight.

"If you have some power, then your job is to empower somebody else."

Stuart Hall 1932-2014 · Jamaica / United Kingdom →

Stuart McPhail Hall was a Jamaican-born British sociologist and cultural theorist. He is one of the founding figures of cultural studies. He was born on 3 February 1932 in Kingston, Jamaica. His family was middle class and mixed race. His parents wanted him to identify as British rather than Jamaican or Black. This early pressure shaped his lifelong interest in identity. In 1951, at nineteen, he won a Rhodes Scholarship to Oxford University. He travelled to England and never moved back to live in Jamaica. He later described arriving in Britain as becoming a 'familiar stranger'. He knew the language and the books. But the country did not know him. This in-between position gave him his unique way of seeing things. He studied literature at Oxford but grew bored with traditional academic work. In the 1950s he helped found the New Left Review. This was a journal for socialist thinkers who rejected both Soviet communism and old British Labour politics. In 1964 he joined the new Centre for Contemporary Cultural Studies at the University of Birmingham. He became its director in 1968. For the next ten years, he turned it into the most important cultural studies centre in the world. In 1979 he moved to the Open University, which taught mostly through TV and correspondence. He wanted to reach ordinary people, not just university students. He stayed there until he retired. He died on 10 February 2014, aged 82. He had suffered from kidney failure for many years.

"Identity is not as transparent or unproblematic as we think."

Umberto Eco 1932-2016 · Italy, Southern Europe →

Umberto Eco (1932-2016) was an Italian philosopher, semiotician, literary theorist, and novelist. He was born in Alessandria in northern Italy and studied philosophy at the University of Turin, writing a doctoral thesis on the medieval philosopher Thomas Aquinas. He then worked in Italian public broadcasting and as a journalist before becoming a professor of semiotics, the study of signs and meaning, at the University of Bologna, where he taught for the rest of his career. He was an enormously prolific scholar who published major academic works on medieval aesthetics, semiotics, the interpretation of texts, and the philosophy of language. In 1980, when he was nearly fifty, he published his first novel, The Name of the Rose, a detective story set in a fourteenth-century Italian monastery. It became an international bestseller translated into dozens of languages, and was followed by several more novels of similar ambition. Eco was unusual in being genuinely important both as an academic philosopher and as a popular novelist, and he saw these two activities as deeply connected: both were explorations of how human beings make and interpret meaning.

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. If for a hundred and a hundred years everyone had freely told what he knew, what a multiplication of forms, categories, of appearances!"

Amartya Sen 1933-present · India / United Kingdom →

Amartya Sen (born 1933) is an Indian economist and philosopher. He was born in West Bengal, India, and grew up during a period of great upheaval: as a child he witnessed the Bengal famine of 1943, in which around three million people died of hunger. This experience shaped his life's work. He studied economics in India and then at Cambridge University in England, where he later became a professor. He has also taught at Harvard University in the United States, where he has spent much of his career. In 1998 he received the Nobel Prize in Economics for his work on welfare economics, poverty, and inequality. He is best known outside economics for two connected contributions: the capabilities approach, a new way of measuring human development and wellbeing, and his analysis of famine, which showed that famines are not caused by a shortage of food but by political failures that leave some people unable to afford the food that exists. He has also written important books on democracy, justice, identity, and the relationship between freedom and development.

"Development can be seen as a process of expanding the real freedoms that people enjoy."

Elinor Ostrom 1933-2012 · United States →

Elinor Ostrom (1933-2012) was an American political economist. She was born in Los Angeles and grew up during the Great Depression, a period of severe economic hardship in the United States. She studied political science at the University of California, Los Angeles, and spent most of her career at Indiana University, where she co-founded the Workshop in Political Theory and Policy Analysis. In 2009 she became the first woman to receive the Nobel Prize in Economics. She received it for her work on how communities manage shared resources: things like forests, fisheries, water systems, and grazing land that many people depend on and that can be damaged if anyone takes too much. The standard economic view was that shared resources would always be destroyed by overuse, the so-called tragedy of the commons. Ostrom showed, through decades of careful fieldwork and research across many countries, that this was wrong. Communities around the world had developed their own rules and institutions for managing shared resources sustainably, without privatisation and without government control. She died in 2012, still working.

"A lot of models in economics assume that human beings are fundamentally selfish. But the evidence shows that many people cooperate and share, even when they could get away with not doing so."

Fatima Ahmed Ibrahim c. 1933-2017 · Sudan →

Fatima Ahmed Ibrahim was a Sudanese feminist, socialist, writer, and political leader. She was the first woman elected to the Sudanese parliament and, according to several sources, the first woman elected to any African parliament. She led the Sudanese Women's Union, one of the largest women's organisations on the African continent, for much of the second half of the twentieth century. She was born in Khartoum in 1933 (some sources give 1928 or 1932) and died in London on 12 August 2017 at age 84. Her funeral in Khartoum a few days later drew large crowds. She came from an educated Sudanese family. Her grandfather had been headmaster of the first Sudanese school for boys and an imam. Her father was a teacher who graduated from Gordon Memorial College and was expelled from a government school for refusing to teach in English. Her mother was among the first generation of Sudanese girls to receive formal schooling. Fatima attended Omdurman Girls' Secondary School, where she founded a wall newspaper called al-Ra'ida (The Pioneer) and led the first women's strike in Sudan, against the school's decision to replace science classes with 'home economics'. The strike won. The pattern of organising and winning began early. In 1947 she founded the Intellectual Women's Association. In 1952 she helped found the Sudanese Women's Union (al-Ittihad al-Nisa'i al-Sudani, SWU). She joined the Sudanese Communist Party in 1954 and served on its Central Committee. In 1965, after Sudanese women won the vote, she was elected to parliament. She campaigned successfully for equal pay, maternity leave, women's suffrage, and other reforms. Multiple Sudanese regimes banned the SWU. She was held under house arrest under Nimeiri. After Bashir's 1989 coup she went into exile in London, leading the SWU from abroad. She returned to Sudan in 2005 and served briefly in parliament again. She received the UN Human Rights Award in 1993 and the Ibn Rushd Prize for Freedom of Thought in 2006.

"We did not want to become another copy of the Western woman. We wanted to be free as Sudanese women, with our own history."

Nina Simone 1933 - 2003 · United States (African American, exiled in Europe in later life) →

Nina Simone was an American singer, pianist, and songwriter. Her real name was Eunice Kathleen Waymon. She was born in 1933 in the small town of Tryon, North Carolina, in the southern United States. She was the sixth of eight children in a poor Black family. She was a gifted musician from very early childhood. She could play piano by ear before she was three. She started playing in church and quickly showed serious talent. White and Black neighbours raised money to pay for her piano lessons. Her dream was to become the first major Black classical concert pianist in America. She studied for a year at the Juilliard School in New York. She then applied to the Curtis Institute in Philadelphia. She was rejected. She always believed the rejection was because of her race. The disappointment shaped her life. To make money, she began singing and playing in nightclubs. She took the stage name Nina Simone partly so her religious mother would not know what she was doing. Her first album came out in 1958. By the early 1960s she was famous. She mixed jazz, classical, blues, gospel, folk, and African music. As the civil rights movement grew, she became one of its most powerful musical voices. After the assassination of Martin Luther King Jr. in 1968, she grew more bitter and politically angry. She left the United States in the 1970s and lived in many countries. She struggled with mental illness, possibly bipolar disorder, throughout her later life. She died in France in 2003.

"An artist's duty is to reflect the times."

Ruth Bader Ginsburg 1933-2020 · United States →

Ruth Bader Ginsburg was an American lawyer and Supreme Court Justice. She is widely seen as one of the most important legal advocates for gender equality in modern history. She was born Joan Ruth Bader on 15 March 1933 in Brooklyn, New York. Her family was Jewish, with roots in Eastern Europe. They were not wealthy. Her mother Celia died of cancer the day before Ruth's high school graduation. She studied at Cornell University, where she met Martin Ginsburg. They married in 1954. The marriage lasted 56 years. Marty Ginsburg was an extraordinary support to her career. He was a tax lawyer, a brilliant cook, and her closest friend. Ginsburg attended Harvard Law School, where she was one of nine women in a class of over 500 men. She transferred to Columbia Law School to be with Marty in New York and graduated joint top of her class. Despite her record, she could not find a Supreme Court clerkship. Law firms often refused to hire her. She was, she later said, 'a woman, a Jew, and a mother to boot'. She became a law professor at Rutgers, then Columbia. In 1972 she co-founded the Women's Rights Project at the American Civil Liberties Union (ACLU). As its head she argued six cases before the Supreme Court between 1973 and 1976, winning five. President Carter appointed her to a federal appeals court in 1980. President Clinton nominated her to the Supreme Court in 1993. She served there for 27 years until her death from pancreatic cancer on 18 September 2020, aged 87. She was the second woman ever to serve on the Court.

"Real change, enduring change, happens one step at a time."

Vine Deloria Jr. 1933 - 2005 · United States (Standing Rock Sioux) →

Vine Deloria Jr. was a Native American scholar, writer, and activist. He was the most influential Native American intellectual of the 20th century. His books changed how Native Americans were studied in universities and how Native communities thought about themselves. He was born in 1933 in Martin, South Dakota. He came from the Standing Rock Sioux tribe. The Sioux are also known by their own names, including Lakota and Dakota. His family had a long history of leadership. His grandfather was a Yankton Sioux man named Tipi Sapa. His father, Vine Deloria Sr., was an Episcopal priest, one of the first Native American priests in that church. His aunt was the writer and historian Ella Deloria. The family combined deep involvement in the Christian church with deep loyalty to Sioux traditions. The combination shaped Vine Jr.'s thinking. He studied at Iowa State University and then at the Lutheran School of Theology in Illinois. He earned a master's degree in theology in 1963. He also earned a law degree in 1970. He served as executive director of the National Congress of American Indians from 1964 to 1967, the major political organisation for Native nations. His first book, Custer Died for Your Sins, came out in 1969. It was an angry, funny, wide-ranging attack on how white America treated Native Americans. It became a major bestseller. He went on to write more than 20 books on law, religion, science, and history. He taught at several universities, ending at the University of Colorado. He died of cancer in 2005, aged 72. His son Philip Deloria is also a leading scholar.

"We are the only humans who became Indians."

Audre Lorde 1934-1992 · United States →

Audre Lorde (1934-1992) was an American poet, essayist, teacher, and political activist whose work insisted on the interconnection of race, gender, sexuality, and class in the analysis of power. She was born Audrey Geraldine Lorde in New York City to parents who had emigrated from Grenada in the Caribbean. She dropped the y from her name as a child, preferring the symmetry of Audre Lorde. She grew up in Harlem during the Depression, attended Hunter College and Columbia University, and worked as a librarian while beginning to publish her poetry. Her first book of poems appeared in 1968. She went on to publish ten further poetry collections, three prose books including the autobiographical novel Zami: A New Spelling of My Name, and a large body of essays and speeches gathered in Sister Outsider and other volumes. She taught at Tougaloo College in Mississippi and later held a long professorship in English at Hunter College in New York. She was diagnosed with breast cancer in 1978 and wrote The Cancer Journals, one of the first serious public accounts of the experience. She lived for a period in the Caribbean island of St Croix, where she continued her writing and political organising. She died of liver cancer in 1992, aged fifty-eight. She described herself, in a phrase that became famous, as a Black, lesbian, mother, warrior, poet — refusing to be reduced to any single part of that identity.

"There is no such thing as a single-issue struggle because we do not live single-issue lives."

Wole Soyinka 1934 - present · Nigeria (Yoruba) →

Wole Soyinka is a Nigerian playwright, poet, novelist, essayist, and political activist. In 1986 he became the first African writer to win the Nobel Prize in Literature. He has been one of the most important African intellectual voices of the past 60 years. He has produced major work in many forms while also engaging directly in Nigerian and African political struggles. He was born in 1934 in Abeokuta, in what is now southwestern Nigeria. He is now in his nineties. His full name is Akinwande Oluwole Babatunde Soyinka. He comes from the Yoruba people, one of the major ethnic groups of Nigeria. Yoruba culture, religion, mythology, and theatrical traditions have shaped his work throughout his career. His father was a school headmaster. His mother, whom he called Wild Christian in his memoirs, was a shopkeeper and Christian activist. He grew up in a household that mixed Christian Anglican faith with Yoruba traditions. He studied at University College Ibadan in Nigeria, then at the University of Leeds in England. He worked at the Royal Court Theatre in London in the late 1950s. In 1960, the year Nigeria gained independence from Britain, he returned home. He helped found Nigerian theatre as a serious modern art form. He has written more than 30 plays, several novels, multiple poetry collections, and many essays. His political activism has been constant. During the Biafran civil war of 1967-1970, he tried to mediate between the warring sides and was imprisoned by the Nigerian military government for two years, much of it in solitary confinement. He has continued challenging Nigerian governments, especially military dictatorships. He has lived in exile for periods of his life, often under death threats. He has held academic positions at universities in Nigeria, Britain, and the United States. He continues writing and speaking publicly today.

"A tiger does not proclaim its tigritude. It pounces."

Edward Said 1935-2003 · Palestine / United States →

Edward Wadie Said was a Palestinian-American literary critic, public intellectual, and music critic. He was one of the founders of postcolonial studies. He was born on 1 November 1935 in Jerusalem, in what was then British Mandate Palestine. His family was Palestinian Christian. His father was a successful businessman with American citizenship. The family lived between Jerusalem and Cairo. In 1948, the State of Israel was created and hundreds of thousands of Palestinians were displaced. Said's family lost their home in Jerusalem. He was 12. The family settled in Cairo, where he attended British and American schools. At 15, he was sent to boarding school in the United States. He studied at Princeton and then at Harvard, where he earned his PhD in English literature in 1964. He taught at Columbia University in New York for most of his career, from 1963 until his death. His early work was on European literature, especially Joseph Conrad. In 1978 he published Orientalism, the book that changed his life and founded a new field of study. It argued that Western scholarship about the Middle East had created a false and damaging image of the region. He was also a vocal advocate for Palestinian rights. He served for fourteen years on the Palestinian National Council. He wrote about music as a critic and was an accomplished pianist. With the Argentine-Israeli conductor Daniel Barenboim, he co-founded the West-Eastern Divan Orchestra, which brings young Arab and Israeli musicians together. He died of leukaemia on 25 September 2003 in New York, aged 67.

"The Orient was almost a European invention, and had been since antiquity a place of romance, exotic beings, haunting memories and landscapes, remarkable experiences."

Henry Widdowson born 1935 · United Kingdom →

Henry Widdowson is a British linguist. A linguist is someone who studies language in a scientific way. Widdowson was born in 1935. He became one of the most important thinkers in a field called applied linguistics. Applied linguistics is the study of real-world language problems. The biggest of these problems is how people learn and teach languages. Widdowson spent his career thinking carefully about this. He studied at the University of Cambridge and later at the University of Edinburgh. He then taught at the University of London and at the University of Essex. He also worked for the British Council, an organisation that helps spread English teaching around the world. Later he worked in Vienna, Austria. Widdowson wrote many books and articles. His most famous book is 'Teaching Language as Communication', published in 1978. It changed how many people thought about language teaching. Widdowson is known for being a deep and careful thinker. He often questioned popular ideas in his field. He did not just accept new teaching methods because they were fashionable. He asked hard questions about whether they really made sense. Because of this, he is sometimes called the conscience of applied linguistics. He pushed the field to think clearly. He is still active as a writer and speaker.

"Language learning is not just a matter of acquiring knowledge, but of learning how to put that knowledge to use."

Ikujiro Nonaka b. 1935 · Japan →

Ikujiro Nonaka (born 1935) is a Japanese organisational theorist whose work on knowledge creation in organisations has made him one of the most influential management thinkers of the knowledge economy era. He was born in Tokyo in 1935 and grew up through the hardships of wartime and postwar Japan. He graduated from Waseda University with a degree in political science in 1958 and worked for nine years at Fuji Electric, where he saw first-hand how Japanese companies developed new products and managed learning across the organisation. In 1967 he left for California to pursue graduate study, earning an MBA and then a PhD from Berkeley's Haas School of Business in 1972. He joined the faculty of the Nanzan University in Nagoya, then moved to Hitotsubashi University in Tokyo, where he spent most of his academic career and is now Professor Emeritus. He has also held positions at Berkeley, Harvard Business School, and the University of British Columbia. His most influential work is The Knowledge-Creating Company (1995), co-authored with Hirotaka Takeuchi, which introduced the SECI model of knowledge creation and drew extensively on cases from Japanese companies including Honda, Canon, and Matsushita. The book was one of the first major works to treat knowledge creation as a central strategic activity rather than as a by-product of operations. It drew on Japanese philosophical traditions as well as Western organisational theory, producing a synthesis that was distinctively grounded in its cultural context while addressing universal questions. Nonaka has continued publishing on knowledge management, leadership, and organisational learning, including The Wise Leader (with Takeuchi, 2011) and work on phronesis (practical wisdom) as a leadership capacity. He received the Chevalier in the Ordre des Arts et des Lettres from France in 2001 and was the first Japanese inductee into the Thinkers50 Management Hall of Fame in 2017. He has been instrumental in making Japanese organisational thinking accessible to global management thought.

"The knowledge-creating company is as much about ideas as it is about ideals."

Fela Kuti 1938-1997 · Nigeria →

Fela Kuti was a Nigerian musician, bandleader, and political activist. He was born in 1938 in Abeokuta, a city in southwest Nigeria. He died in 1997 in Lagos. He is widely seen as one of the most important African musicians of the twentieth century. Fela came from a famous family. His mother, Funmilayo Ransome-Kuti, was a leading Nigerian feminist and anti-colonial activist. His father was a school principal and a Christian minister. The family was middle class and well educated. As a young man, Fela studied music in London at Trinity College of Music. He returned to Nigeria and toured in the United States in 1969. There he met Black Panther activists, who influenced his political thinking. In the late 1960s and early 1970s, he created a new style of music called Afrobeat. Afrobeat blends West African rhythms, especially Yoruba, with American jazz and funk. The songs are often very long, ten or fifteen minutes or more, with heavy horns and a steady, driving groove. Fela used Afrobeat to attack corruption, military rule, and the lasting effects of colonialism. The Nigerian government repeatedly tried to silence him. He was arrested many times. In 1977 soldiers attacked his home and beat him severely. He kept making music until shortly before his death from AIDS-related illness.

"Music is the weapon of the future."

Lynn Margulis 1938-2011 · United States →

Lynn Margulis (1938-2011) was an American biologist and theorist. She was born Lynn Alexander in Chicago, graduated from the University of Chicago at eighteen, and went on to earn a doctorate from the University of California, Berkeley. She spent most of her academic career at the University of Massachusetts Amherst. In the 1960s, while still in her twenties, she developed her theory of serial endosymbiosis: the argument that the complex cells found in animals, plants, and fungi, called eukaryotic cells, evolved through a process in which smaller bacteria were incorporated into, and eventually became permanent parts of, larger cells. The mitochondria that produce energy in animal cells, and the chloroplasts that perform photosynthesis in plant cells, were originally free-living bacteria that were engulfed by larger cells and eventually became unable to live independently. This theory, which fundamentally changed how biologists understood the evolution of complex life, was rejected fifteen times before it was finally published in 1967. She also co-developed the Gaia hypothesis with the chemist James Lovelock, arguing that the Earth's biological and physical systems interact as a self-regulating whole. She died in 2011 from a stroke.

"Life did not take over the globe by combat, but by networking."

Ngugi wa Thiong'o 1938-present · Kenya, East Africa →

Ngugi wa Thiong'o (born 1938) is a Kenyan writer, novelist, and thinker. He grew up during British colonial rule in Kenya and lived through the struggle for independence. He wrote his early novels in English and became well known across Africa and the world. Then, in 1977, he made a decision that changed his life: he stopped writing in English and began writing only in his mother tongue, Gikuyu. He did this as a political act, to say that African languages are full and worthy languages for serious literature and thought. His play Ngaahika Ndeenda, written in Gikuyu and performed with community members, led to his arrest and imprisonment without trial by the Kenyan government in 1977. After his release he was forced into exile. He has taught at universities in the United States and continues to write, think, and speak about language, colonialism, and African identity.

"Language carries culture, and culture carries, particularly through orature and literature, the entire body of values by which we come to perceive ourselves and our place in the world."

Kwame Gyekye 1939-2019 · Ghana, West Africa →

Kwame Gyekye (1939-2019) was a Ghanaian philosopher. He was born in Kumasi, Ghana, and studied philosophy at the University of Ghana and Harvard University. He taught philosophy at the University of Ghana for most of his career and became one of the most important African philosophers of the twentieth century. He worked on African philosophy, moral philosophy, political philosophy, and the philosophy of culture. His two most important books are An Essay on African Philosophical Thought (1987), which used Akan philosophical concepts to show that African traditional thought is a genuine philosophical tradition, and Tradition and Modernity (1997), which asked how African societies should think about the relationship between their traditional values and the modern world. He is particularly important for his idea of moderate communitarianism: a view of society that values community without removing the rights of individuals.

"The communal life is not an optional extra for the human individual. It is the context in which the individual acquires a sense of identity, meaning, and purpose."

Seamus Heaney 1939-2013 · Northern Ireland / Ireland →

Seamus Heaney was an Irish poet. He won the Nobel Prize in Literature in 1995. He is widely regarded as one of the greatest English-language poets of the late twentieth century. He was born on 13 April 1939 at a farmhouse called Mossbawn, near Castledawson in County Derry, Northern Ireland. He was the eldest of nine children in a Catholic farming family. The family later moved to nearby Bellaghy. He grew up in a divided society. Northern Ireland was part of the United Kingdom but had a large Catholic minority who often felt unequal. The 'Troubles', a long period of violence between Catholics and Protestants, would later shape his work. As a clever child, he won a scholarship at age 12 to St Columb's College, a Catholic boarding school in Derry. He then studied English at Queen's University Belfast. His younger brother Christopher died at the age of four after being hit by a car. Heaney was 14. He later wrote one of his most loved poems, 'Mid-Term Break', about coming home for the funeral. He published his first major book of poems, Death of a Naturalist, in 1966. It won prizes and made him famous. He continued to write for almost fifty years, producing twelve major collections plus translations. He taught at universities in Belfast, Dublin, Harvard, and Oxford. He married Marie Devlin in 1965; they had three children. He died on 30 August 2013, aged 74. His last words, sent by text to his wife in Latin, were 'Noli timere': do not be afraid.

"Between my finger and my thumb / The squat pen rests; snug as a gun."

Annie Ernaux 1940-present · France →

Annie Ernaux is a French writer. In 2022 she became the first French woman to win the Nobel Prize in Literature. She was born Annie Duchesne on 1 September 1940 in Lillebonne, a small town in Normandy. Her parents had grown up poor. Through hard work they had pulled themselves up to run a small grocery store and café in nearby Yvetot. Annie was their only surviving child. An older sister had died before she was born. Her parents earned just enough to send her to a private Catholic school. There she met middle-class girls and felt for the first time the shame of coming from the working class. This shame would become one of her main subjects. She studied literature at the universities of Rouen and Bordeaux. She trained as a secondary school teacher. She married Philippe Ernaux in the 1960s and had two sons. In 1964, while a student, she had an illegal abortion. The experience became one of her most important subjects. Her first novel, Cleaned Out (1974), was about it. She wrote the book in secret, pretending to her husband that she was working on a doctoral thesis. For decades she taught school and wrote her books. She divorced in 1984. She published more than twenty books, mostly autobiographical. The Years (2008) became her most famous work. The Nobel Prize came in 2022 when she was 82. The Swedish Academy honoured her 'for the courage and clinical acuity with which she uncovers the roots, estrangements and collective restraints of personal memory'. She still lives in a Paris suburb.

"I shall not say my father, my mother, my sister: I shall name them."

Wangari Maathai 1940-2011 · Kenya →

Wangari Muta Maathai was a Kenyan environmental activist, scientist, and politician. In 2004 she became the first African woman to win the Nobel Peace Prize. She was born on 1 April 1940 in Nyeri, a rural area in central Kenya, into a Kikuyu farming family. As a child she gathered water from springs protected by tree roots. Her grandmother told her that a large fig tree near the family home was sacred and should never be cut down. These early experiences shaped her later love of trees. In 1960 she was selected for the Kennedy Airlift, a programme that brought East African students to study in the United States. She earned a biology degree at Mount St. Scholastica College in Kansas in 1964 and a master's degree at the University of Pittsburgh in 1966. She returned to Kenya, completed a doctorate at the University of Nairobi in 1971, and became the first woman in East or Central Africa to earn a PhD. In 1977 she founded the Green Belt Movement, an organisation that paid rural women to plant trees. The movement grew quickly and eventually planted over 50 million trees. Through it, Maathai connected the protection of the environment to women's economic rights and to democratic politics. The Kenyan government under President Daniel arap Moi opposed her. She was harassed, beaten, and jailed several times. She kept going. After Moi lost power in 2002, she was elected to parliament with 98 percent of the vote and served as Assistant Minister for Environment. The Nobel Peace Prize came in 2004. She died of ovarian cancer on 25 September 2011, aged 71.

"It is the little things citizens do. That's what will make the difference. My little thing is planting trees."

C.K. Prahalad 1941-2010 · India / United States →

Coimbatore Krishnarao Prahalad (1941-2010) was an Indian-American management scholar whose ideas about corporate strategy, core competence, and the business opportunity at the bottom of the pyramid transformed how companies and development thinkers approached both strategy and poverty. He was born in Coimbatore, in Tamil Nadu, the son of a judge and a civil servant. He studied physics at Loyola College, Madras, and worked for four years in an Indian branch of Union Carbide, the American chemical company, before entering the Indian Institute of Management in Ahmedabad. In 1972 he travelled to the United States for doctoral work at Harvard Business School, completing his thesis in 1975. He joined the faculty of the University of Michigan's Ross School of Business in 1977 and remained there for the rest of his career. His 1990 Harvard Business Review article with Gary Hamel, The Core Competence of the Corporation, became one of the most-cited business articles ever written and reshaped strategic thinking through the 1990s. His later work took him in a different direction. His 2002 article and 2004 book The Fortune at the Bottom of the Pyramid argued that the world's poorest four billion people represented not only a moral claim on international attention but also a significant market that could be served profitably if products and business models were designed appropriately. The book reached business schools, development agencies, and corporations. He continued publishing influential work until his death, wrote regularly for Indian newspapers on the country's development, and mentored a generation of scholars and practitioners. He died in San Diego in 2010 at the age of sixty-eight.

"The roots of competitive advantage are buried deep inside the corporation."

David Crystal born 1941 · United Kingdom →

David Crystal is a British linguist. A linguist is a person who studies language in a careful, scientific way. Crystal was born in 1941 in Lisburn, Northern Ireland. He spent part of his childhood in Wales, and Wales is still his home today. Crystal studied English at University College London. He then worked as a university lecturer, first at Bangor and then at Reading, where he became a professor. In 1984 he left full-time university work. Since then he has worked as an independent writer, editor, and broadcaster. Crystal is famous for one main reason. He has written or edited more than one hundred books about language. Many of these are for ordinary readers, not only for experts. He wrote two large reference books, 'The Cambridge Encyclopedia of Language' and 'The Cambridge Encyclopedia of the English Language'. He has also written about how English spread around the world, about languages that are dying out, and about how the internet changes language. Crystal often appears on radio and television. He is known for explaining difficult ideas in a clear and friendly way. He has also helped theatres perform Shakespeare's plays using the pronunciation of Shakespeare's own time. He is still active as a writer and speaker.

"Language change is normal, continuous, and not something to be feared."

V. Y. Mudimbe 1941-2025 · Democratic Republic of the Congo (later United States) →

Valentin-Yves Mudimbe was a Congolese philosopher, novelist, and linguist. He was one of the most important African thinkers of the late 20th century. He was born in 1941 in Likasi, in what was then the Belgian Congo. His family was Catholic and he was educated in Catholic schools. As a young man, he entered a Benedictine monastery in Rwanda and considered becoming a monk. He left the monastery after a few years but remained interested in religion throughout his life. He studied Romance philology and philosophy, gaining a doctorate from the Catholic University of Louvain in Belgium in 1970. He returned to Congo and taught at universities there. In 1979, he left Congo for the United States, unable to continue working under the Mobutu dictatorship. He taught at Haverford College, then at Duke University, then at Stanford. He wrote in French and English. His academic writing was deep and difficult. He also wrote novels and poetry that many readers found more accessible. His most famous book is The Invention of Africa, published in 1988. It changed how scholars think about African studies. He followed it with The Idea of Africa in 1994 and many other books and essays. He retired from Duke University in 2014. He died on 21 April 2025, aged 83, in North Carolina. His death was widely mourned across the African intellectual community.

"There exists an African way of interpreting the world which presents the universe as a totality."

Gloria Anzaldúa 1942-2004 · Texas, United States / Mexico border →

Gloria Anzaldúa (1942-2004) was a Chicana cultural theorist, poet, and writer. She was born in the Rio Grande Valley of south Texas into a family of farmworkers, descendants of both the indigenous peoples of the region and the Spanish colonisers, who had been living on the Texas-Mexico border since before Texas became part of the United States. She grew up between English and Spanish, between Mexican and American cultures, between indigenous and Catholic traditions, and between the rural world of agricultural labour and the academic world she eventually entered. She studied at the University of Texas at Pan American, then at the University of Texas at Austin, and later at the University of California, Santa Cruz, where she completed her doctoral work. She is best known for Borderlands/La Frontera: The New Mestiza (1987), a groundbreaking work that mixes prose and poetry, Spanish and English, theory and autobiography to develop her philosophy of borderlands consciousness. She also co-edited This Bridge Called My Back (1981), a landmark anthology of writings by women of colour that helped define the field of women of colour feminism. She died in 2004 from complications of diabetes.

"The US-Mexican border es una herida abierta where the Third World grates against the First and bleeds."

Walter Rodney 1942-1980 · Guyana, Caribbean / South America →

Walter Rodney (1942-1980) was a Guyanese historian, political thinker, and activist. He was born in Georgetown, Guyana, then a British colony in South America, and showed exceptional academic ability from childhood. He studied history at the University of the West Indies in Jamaica and then completed a doctorate at the School of Oriental and African Studies in London. He taught at universities in Tanzania and Jamaica and became one of the most important historians of Africa and the African diaspora of his generation. He is best known for his book How Europe Underdeveloped Africa, published in 1972, which showed systematically how African countries were made poor through centuries of colonial exploitation, not left poor through a lack of development. He was deeply committed to organising alongside working people and poor communities, not only writing about them. He was banned from Jamaica in 1968 for his political activities. He returned to Guyana in 1974 to work for political change there and was assassinated in 1980 at the age of thirty-eight. He died just months before elections that might have changed Guyanese politics.

"African development is possible only on the basis of a radical break with the international capitalist system, which has been the principal agency of underdevelopment of Africa over the last five centuries."

Bernard Narokobi c. 1943-2010 · Papua New Guinea →

Bernard Mullu Narokobi was a Papua New Guinean philosopher, jurist, parliamentarian, and poet, best known for developing the concept of 'the Melanesian Way' as a guiding philosophy for newly independent Papua New Guinea. He is one of the most important political thinkers the Pacific has produced. He was born around 1943 in Wautogik village in the Prince Alexander Mountains of what is now East Sepik Province, Papua New Guinea. The exact date is not known; he was born during the Second World War. His people were the Arapesh. His father Anton (also known as Kukum) Narokobi had been taught by Catholic missionaries and worked as a catechist serving Boiken and Dagua villages. His mother was Maria Mokoi. Narokobi was the second eldest of five siblings. His younger brother Camillus is also a lawyer. Narokobi left home in 1960 to attend Kerevat School in New Britain, one of the first government-run schools educating Papua New Guineans at high levels. He went on to study law in Australia and became one of PNG's first generation of indigenous lawyers. He served on the Constitutional Planning Committee that drafted Papua New Guinea's constitution before independence in 1975. With John Momis and others, he drafted the National Goals and Directive Principles and Basic Social Obligations that form the preamble to the constitution. He published Foundations for Nationhood in 1975 and his most famous work, The Melanesian Way, in 1980. He served as a Member of Parliament for Wewak Open from 1987 to 1997, three terms, and held senior positions including Minister for Justice. He was a strong supporter of West Papuan independence. His wife Regina died of breast cancer in 2007. He was serving as Papua New Guinea's High Commissioner to New Zealand at the time of his own death in March 2010. He was about 67.

"We are a nation of villages."

María Lugones 1944-2020 · Argentina / United States →

María Lugones (1944-2020) was an Argentine-American philosopher. She was born in Buenos Aires, Argentina, and moved to the United States as a young woman, where she completed her doctorate in philosophy and spent her career teaching at Binghamton University in New York. She was a feminist philosopher, a Latina scholar, and a community activist who worked extensively with migrant and indigenous communities in the American Southwest. She is best known for two connected contributions to philosophy. The first is her concept of world-travelling: the practice of genuinely entering another person's world to see reality as they see it, which she proposed as the foundation of a loving and just way of relating across difference. The second is her concept of the coloniality of gender: the argument that the gender system as it now exists across most of the world was imposed through colonialism, and that many indigenous and non-Western communities had very different and often more complex and flexible understandings of gender before colonial contact. She died in 2020, widely recognised as one of the most important feminist philosophers of the late twentieth and early twenty-first centuries.

"I am a being in multiple worlds and I travel among them, feeling at ease in some of them, not at ease in others, successful in some, unsuccessful in others."

Mogobe Ramose 1944-present · South Africa, Southern Africa →

Mogobe Ramose (born 1944) is a South African philosopher. He was born in the North West Province of South Africa and grew up under the apartheid system, which enforced racial segregation and denied Black South Africans basic rights. He studied philosophy in South Africa, Belgium, and the Netherlands, and has taught at universities in South Africa and across Africa. He is best known for his philosophical work on ubuntu, an African philosophical concept that he has developed into a full philosophical system, and for his arguments that African philosophy is a genuine and legitimate philosophical tradition. He has also written about the philosophy of law, the concept of sovereignty, and the moral case for reparations for colonialism and apartheid.

"Ubuntu is the basis of African philosophy. The Nguni Bantu expression umuntu ngumuntu ngabantu means that to be human is to affirm one's humanity by recognising the humanity of others."

Nora Vagi Brash 1944-2024 · Papua New Guinea →

Nora Vagi Brash OBE CMG was a Papua New Guinean playwright, poet, actress, and director, widely regarded as the country's foremost dramatist. She was the first major woman playwright in Papua New Guinean literature and one of the founders of modern PNG theatre. She wrote in a distinctive style that mixed Papua New Guinea's three national languages, Hiri Motu, Tok Pisin, and English, often within a single play, reflecting how Papua New Guineans actually speak in daily life. She was born in Dagoda village, Central Province, Papua New Guinea, into a Motuan family. The exact year of her birth is given variously as 1944 or in the late 1940s. She was educated locally and went on to teach at Kila Kila primary school, where she wrote her first performed play. She later returned to formal education and graduated with a Bachelor of Arts in Literature from the University of Papua New Guinea in 1982. She had begun writing and performing in PNG's theatre scene in the early 1970s. She became a lecturer in puppetry, dance, and drama at the Creative Arts School in Port Moresby. She went on to become Artistic Director of the National Arts School and one of two artistic directors of the Papua New Guinea National Theatre Company. The Theatre Company toured villages across PNG to perform and raise social awareness, and toured internationally including to New Zealand, Nigeria, and England. Her most famous play, Which Way, Big Man? (1976), is widely studied across the Pacific. She wrote her first performed play, The High Cost of Living Differently, in 1975. Other major works include Black Market Buai, Sold Outright, Taurama (for which she received the PNG Independence Medal in 1985), Pick the Bone Dry, and City Spirits. She also wrote substantial poetry. She served as deputy chairperson of the PNG National Cultural Council and on the board of the Institute of PNG Studies. Oxford University Press published her collection Which Way Big Man? and Five Other Plays. She was awarded both an OBE and CMG. She died in April 2024, mourned across the Pacific theatre community.

"Director of National Identity. As if such a thing could be directed at all."

Angus Deaton born 1945 · United Kingdom →

Angus Deaton is an economist. He was born in 1945 in Edinburgh, Scotland. His father was a coal miner who valued education highly. Deaton won scholarships to good schools and then studied at the University of Cambridge in England. After a short job at the Bank of England, Deaton became a university teacher. He taught in Britain, at Cambridge and Bristol. In 1983 he moved to Princeton University in the United States, where he spent most of his career. He now holds both British and American citizenship. Deaton's work is about real, practical questions. How much do people spend, and on what? How is poverty measured? Why do some people live long, healthy lives while others do not? He is famous for being careful with data and for asking whether the numbers we use can really be trusted. In 2015 Deaton won the Nobel Prize in Economics. The prize honoured his work on consumption, poverty, and welfare. Deaton has also written books for general readers, such as 'The Great Escape' and 'Economics in America'. With his wife, the economist Anne Case, he studied a worrying rise in early deaths among some Americans. In recent years Deaton has openly questioned parts of mainstream economics that he once supported.

"Life is better now than at almost any time in history, but this is a story with two sides."

Deborah Tannen b. 1945 · United States →

Deborah Tannen (born 1945) is an American linguist who has become one of the most widely read scholars of how people talk to each other. She studies what linguists call conversation analysis and sociolinguistics — fields that look at language as people actually use it in daily life. She was born in Brooklyn, New York, to a Hasidic Jewish family. Her parents had emigrated from Poland before the Second World War, and many members of her wider family died in the Holocaust. This family history would later shape some of her thinking about how people from different backgrounds understand each other. She studied English literature at Harpur College and earned a master's degree at Wayne State University. In her thirties she began studying linguistics, completing her PhD at the University of California, Berkeley, in 1979 under the supervision of Robin Lakoff, a pioneer in research on language and gender. In 1979 she joined Georgetown University, where she has remained for her whole career, becoming one of the most respected scholars in her field. Her 1990 book You Just Don't Understand: Women and Men in Conversation changed public understanding of gender and language. It stayed on the New York Times bestseller list for four years and sold millions of copies in thirty languages. It was followed by many other books written for general readers, including Talking from 9 to 5 (1994) on workplace conversation, You're Wearing That? (2006) on mothers and daughters, and You Were Always Mom's Favorite! (2009) on sisters. She has also written academic books like Conversational Style (1984) and Talking Voices (1989) for fellow scholars. This combination — serious academic work and books that millions of ordinary readers buy — is unusual and has produced some tension with colleagues. Some linguists think her popular books oversimplify. Others defend her for bringing linguistic insights to audiences who would never read an academic journal. She remains one of the very few American linguists whose name is widely known outside the field.

"Communication is a continual balancing act, juggling the conflicting needs for intimacy and independence."

Claudia Goldin 1946-present · United States →

Claudia Goldin is an American economist and economic historian. In 2023, she won the Nobel Prize in Economic Sciences, becoming the first woman to win it alone. She was born on 14 May 1946 in New York City. Her parents were not wealthy, but they valued education. As a girl she wanted to be a detective. Later she said she still thought of herself as one: a detective hunting for evidence in dusty archives. She studied at Cornell University and then went to the University of Chicago for her PhD, which she finished in 1972. At Chicago she was shaped by economists like Robert Fogel and Gary Becker. Fogel used historical data to study slavery and other economic questions. Becker applied economic thinking to family life and discrimination. Goldin would later use both approaches in her own work. She taught at several universities before joining Harvard University in 1990. At Harvard, she became the first woman to receive tenure in the Department of Economics. This was a serious barrier broken. Harvard's economics department, like most at the time, was almost entirely male. She has spent the rest of her career there. Her research focuses on the history of women in the labour market. She spent decades building long-term data sets on women's work and pay in the United States, going back over 200 years. This patient archive work made her one of the world's leading historians of women's economic lives. She has written many books, including Understanding the Gender Gap (1990), The Race between Education and Technology (2008, with her husband Lawrence Katz), and Career and Family (2021). She is still active in 2026.

"I have always thought of myself as a detective."

Peter Singer 1946-present · Australia (currently United States) →

Peter Singer is an Australian philosopher. He is one of the most widely read living philosophers and one of the most controversial. He was born on 6 July 1946 in Melbourne, Australia. His parents were Austrian Jews who had escaped Vienna in 1938 after the Nazi annexation of Austria. Three of his grandparents were killed in the Holocaust. This family history shaped his lifelong concern with preventable suffering. He studied law, history, and philosophy at the University of Melbourne, then went to Oxford for his graduate work. It was at Oxford in the early 1970s that he began serious work on the ethics of how humans treat animals. His 1975 book Animal Liberation became a founding text of the modern animal rights movement. It has sold over half a million copies and has been translated into many languages. He has taught at La Trobe University in Australia, Monash University, New York University, and since 1999 at Princeton University in the United States, where he holds the Ira W. DeCamp Professorship of Bioethics. His appointment at Princeton caused controversy. Disability rights activists protested some of his views on severely disabled newborns. He has written or edited more than forty books and hundreds of articles. His most influential are Animal Liberation (1975), Practical Ethics (1979), The Life You Can Save (2009), and The Most Good You Can Do (2015). He co-founded The Life You Can Save organisation, which encourages effective giving to reduce global poverty. He is one of the founding figures of the effective altruism movement. He is still active in his late seventies.

"The question is not, Can they reason? nor, Can they talk? but, Can they suffer?"

Steve Biko 1946-1977 · South Africa →

Steve Biko (1946-1977) was a South African activist and philosopher. He was born in King William's Town in the Eastern Cape, and grew up under the apartheid system, which separated South Africans by race and gave white South Africans almost all political, economic, and social power. He studied medicine at the University of Natal, one of the few universities that allowed Black students at that time, though they were kept in a separate section. There he became politically active and helped found the South African Students Organisation in 1968. He left the white-led liberal student movement because he believed that Black liberation could not be led by white people, even sympathetic ones: Black people had to lead and define their own liberation. He developed the philosophy of Black Consciousness, which argued that before political liberation could succeed, Black South Africans had to overcome the psychological damage of apartheid: the internalised sense of inferiority that the system had deliberately produced. He was banned, arrested, and tortured by the South African security police. He died in police custody in September 1977, aged thirty years old. His death caused international outrage and strengthened opposition to the apartheid regime.

"The most potent weapon in the hands of the oppressor is the mind of the oppressed."

Françoise Barré-Sinoussi 1947-present · France →

Françoise Barré-Sinoussi is a French virologist. She is one of the two scientists who discovered the Human Immunodeficiency Virus (HIV), the cause of AIDS. She was born in Paris on 30 July 1947. Her family was not rich and had no connection to science or medicine. But as a child she spent her summers in the French countryside, watching insects and animals. She said later that the smallest insect could hold her attention for hours. This early habit of close observation shaped her whole life. She studied natural sciences at the University of Paris. She was bored by lectures. Instead, she spent her time volunteering at the Pasteur Institute, a famous research centre in Paris. There she worked with Jean-Claude Chermann, who was studying viruses called retroviruses. She earned her PhD in 1975 and did postdoctoral research in the United States. Then she returned to the Pasteur Institute, where she spent the rest of her career. In late 1982, a new disease called AIDS was killing people across the world. No one knew what caused it. A French doctor named Willy Rozenbaum asked Barré-Sinoussi's team at the Pasteur Institute for help. They took a tissue sample from a patient in early 1983. Within two weeks, Barré-Sinoussi detected a new retrovirus in the sample. It was the virus we now call HIV. The discovery was published in May 1983. Barré-Sinoussi was 35 years old. For the next 30 years, she worked on HIV. She set up her own laboratory in 1988. She became one of the world's leading AIDS researchers. She was president of the International AIDS Society from 2012 to 2014. In 2008, she shared the Nobel Prize in Physiology or Medicine for the discovery of HIV. She retired from active research in 2015 but remained active as an advocate. In 2009, she wrote an open letter to Pope Benedict XVI after he said condoms did not help stop AIDS. She was in her 70s in 2026 and still speaking publicly on global health.

"We are not making science for science. We are making science for the benefit of humanity."

Judith Heumann 1947-2023 · United States →

Judith Heumann was an American disability rights activist. She is often called 'the mother of the disability rights movement'. She was born on 18 December 1947 in Philadelphia, Pennsylvania. Her parents, Werner and Ilse Heumann, were German Jewish immigrants. Many of their relatives had been killed in the Holocaust. The family later moved to Brooklyn, New York. When Judy was 18 months old, she got polio. This was during a large outbreak of the disease in the United States. A machine helped her breathe for three months. When she recovered, she could not walk. She used a wheelchair for the rest of her life. At age five, the principal of her local school refused to let her attend. He called her a 'fire hazard'. Her mother fought this. Eventually Judy got an education, partly in special classes and partly in a public high school. She went to Long Island University, where she began organising other disabled students. In her twenties, she applied to become a teacher in New York City. The Board of Education passed her written and oral exams but failed her medical exam because she used a wheelchair. In 1970, she sued them. The judge, Constance Baker Motley (the first Black woman federal judge), made it clear the Board would lose. They settled. Heumann became the first wheelchair user to teach in the state of New York. She taught for three years. She became one of the main leaders of the American disability rights movement. In April 1977, she led a 26-day sit-in at a federal building in San Francisco. The sit-in forced the US government to implement Section 504, the first major US disability civil rights law. She later worked for both the Clinton and Obama administrations. She wrote her memoir Being Heumann in 2020. She died on 4 March 2023 in Washington D.C., aged 75. The Americans with Disabilities Act of 1990 and the UN Convention on the Rights of Persons with Disabilities (2006) both owe much to her work.

"Some people say that what I did changed the world. But really, I simply refused to accept what I was told about who I could be. And I was willing to make a fuss about it."

Martha Nussbaum 1947-present · United States →

Martha Craven Nussbaum is an American philosopher. She is one of the most influential and widely read philosophers of the past fifty years. She was born on 6 May 1947 in New York City. Her family was wealthy and Protestant, with roots in the American South. She later said her comfortable childhood made her acutely aware of inequality and the contingencies of privilege. She converted to Judaism in 1969. She studied classics at New York University and earned her PhD from Harvard in 1975. Her doctoral work was on ancient Greek philosophy, especially Aristotle. Classical scholarship has remained central to her work throughout her career. She has taught at Harvard, Brown, and, since 1995, at the University of Chicago, where she holds a joint appointment in the Law School and the Philosophy Department. She has written more than thirty books and hundreds of articles. Her major works include The Fragility of Goodness (1986) on ancient Greek ethics, Women and Human Development (2000) on her capabilities approach, Upheavals of Thought (2001) on emotions, and Political Emotions (2013) on how societies cultivate good feelings. She has worked with the economist Amartya Sen on the capabilities approach to human development, which has influenced the United Nations Human Development Index. She has been a public intellectual throughout her career. She has written on women's rights, LGBT equality, disability, animal welfare, and the role of emotions in law and politics. She has received many honours, including the Kyoto Prize and the Berggruen Prize. She is still active, writing and teaching in 2026.

"The best approach to the question of social justice is the capabilities approach: what are people actually able to do and to be?"

Michael Porter b. 1947 · United States →

Michael Eugene Porter (born 1947) is an American academic whose work on competitive strategy, national competitiveness, and the economic analysis of healthcare and social problems has made him one of the most influential management scholars of the past half-century. He was born in Ann Arbor, Michigan, the son of a military officer, and grew up moving around the United States and abroad as his father's postings changed. He studied aerospace engineering at Princeton, graduating in 1969, then earned an MBA at Harvard Business School in 1971 and a PhD in business economics from Harvard in 1973. He joined the Harvard Business School faculty in 1973 and has remained there throughout his career, holding the position of Bishop William Lawrence University Professor, the highest rank the university awards. His 1980 book Competitive Strategy introduced the five forces framework and the generic strategies of cost leadership, differentiation, and focus. Competitive Advantage (1985) developed the value chain framework. The Competitive Advantage of Nations (1990) applied strategic analysis to whole countries and introduced the diamond model and the concept of industrial clusters. Since the 1990s he has increasingly applied strategic analysis to social problems — healthcare, economic development, environmental protection, education. His 2011 article with Mark Kramer on creating shared value extended his framework to the broader question of what business should do about social problems. He has advised governments on competitiveness in many countries, served on corporate boards, and founded several organisations including the Institute for Strategy and Competitiveness at Harvard. He is known for his intense, systematic approach to analysis and for the discipline he brings to strategic thinking. His influence on how strategy is taught and practised globally has been substantial; he is often described as the most cited author in management and economics.

"The essence of strategy is choosing what not to do."

Patricia Hill Collins 1948-present · United States →

Patricia Hill Collins is an American sociologist. She is one of the most important thinkers on race, gender, and power in recent decades. She was born on 1 May 1948 in Philadelphia, Pennsylvania. She grew up in a working-class Black family. Her mother was a secretary and her father worked in a factory. She was often the only Black student in her classrooms. This experience shaped her later ideas about being an outsider inside. She studied at Brandeis University and then Harvard, where she earned a Master's degree in teaching in 1970. She worked for several years as a teacher and community educator, including at the Saint Joseph Community School in Roxbury, Boston. She returned to Brandeis for her doctorate in sociology, which she completed in 1984. She taught at the University of Cincinnati for many years. In 2005, she moved to the University of Maryland, where she became Distinguished University Professor of Sociology. Her 1990 book Black Feminist Thought changed her field. It was the first major attempt to set out Black women's ideas as a coherent intellectual tradition. Since then, she has written many other important books including Black Sexual Politics (2004) and Intersectionality as Critical Social Theory (2019). In 2009, she became the first Black woman to serve as President of the American Sociological Association, the largest body of sociologists in the world. She is now retired from teaching but continues to write. In 2023, she received the Berggruen Prize for Philosophy, a major international award. She is one of the most honoured sociologists alive.

"Self-definition is a way of resisting oppression."

Tony Judt 1948 - 2010 · United Kingdom (later United States) →

Tony Judt was a British-American historian. He was one of the most important historians of postwar Europe and a sharp public intellectual. His massive 2005 book Postwar: A History of Europe Since 1945 is widely considered one of the great works of modern historical writing. He was born in 1948 in London. He died in 2010 in New York, aged 62, from complications of motor neurone disease. He came from a Jewish family with roots in Eastern Europe. His parents were secular socialists. He grew up in north London. He studied history at King's College Cambridge from 1966. He spent time in Israel as a young man, where he worked on a kibbutz and briefly served in the Israeli army during the 1967 Six-Day War. The experience shaped him deeply. He returned home increasingly critical of Israeli policies, while remaining deeply engaged with Jewish history and identity. He earned his PhD in 1972. He taught at Cambridge and Oxford, then moved to the United States in 1987. He became professor of European history at New York University, where he taught for the rest of his career. In 1995 he founded the Remarque Institute at NYU for the study of Europe. He wrote across many fields: French intellectual history, postwar European history, contemporary politics, and questions of social democracy and political memory. He was politically a social democrat. He criticised both the radical left and the contemporary right. Some of his views, especially his strong criticism of Israeli policies and his 2003 essay calling for a binational state in Israel-Palestine, made him controversial. In 2008 he was diagnosed with motor neurone disease, also called ALS. The disease gradually paralysed him while leaving his mind intact. He continued writing through dictation. His final books, written as he was dying, are some of his most powerful. He died in 2010.

"Something is profoundly wrong with the way we live today."

Christopher Hitchens 1949 - 2011 · United Kingdom (later United States) →

Christopher Hitchens was a British-American journalist, essayist, and writer. He was one of the most famous public intellectuals of the late 20th and early 21st centuries. He wrote about politics, literature, religion, and many other subjects. He was known for sharp arguments, beautiful prose, and a willingness to take unpopular positions. He was born in 1949 in Portsmouth, on the south coast of England. He came from a middle-class British military family. His father was a navy officer. His mother was Jewish, though he only learned this as an adult. He studied philosophy, politics, and economics at Oxford from 1967. He was active in left-wing student politics. After university he became a journalist. He wrote for left-wing magazines including the New Statesman. In 1981 he moved to the United States. He wrote a regular column for The Nation, a major American left-wing magazine, for nearly 20 years. He became an American citizen in 2007. He wrote for many other publications including Vanity Fair, The Atlantic, and Slate. He was prolific. He wrote 17 books and thousands of articles. For most of his career, he was on the political left. He was a friend of writers like Salman Rushdie, Martin Amis, and Ian McEwan. After the September 11 attacks in 2001, his politics shifted. He supported the Iraq war in 2003. Many of his old left-wing friends saw this as betrayal. He defended his position fiercely. In 2007 he published God Is Not Great, an aggressive attack on religion. The book made him one of the New Atheists alongside Richard Dawkins, Sam Harris, and Daniel Dennett. He was diagnosed with oesophageal cancer in 2010. He continued writing about his illness with extraordinary honesty. He died in December 2011, aged 62.

"What can be asserted without evidence can also be dismissed without evidence."

Silvia Rivera Cusicanqui 1949-present · Bolivia →

Silvia Rivera Cusicanqui is a Bolivian sociologist, historian, and activist of Aymara heritage. She is one of the most important thinkers on colonialism and Indigenous rights in Latin America. She was born in La Paz, Bolivia, in 1949. Her father was Quechua-speaking, her mother Aymara-speaking. At home, Spanish was the main language, though her family's Indigenous roots shaped her whole life. She studied sociology at the Universidad Mayor de San Andrés in La Paz and later earned a master's in anthropology in Lima. Her early adulthood was shaped by Bolivia's violent politics. In the 1970s, the country was ruled by military dictators. Rivera Cusicanqui was arrested and imprisoned for her political activities. Her master's thesis was destroyed in a raid on her home. She went into exile in Argentina while pregnant with her first daughter. These experiences of violence and loss shaped her lifelong commitment to Indigenous and popular movements. When she returned to Bolivia, she became a professor at the Universidad Mayor de San Andrés, where she taught sociology for over thirty years. She is now emerita professor there. In 1983 she co-founded the Taller de Historia Oral Andina (Andean Oral History Workshop), a group that collects and studies the oral histories of Aymara and Quechua communities. She has worked closely with the Katarista Indigenous movement and with coca growers' movements. She writes in Spanish, Quechua, and Aymara, sometimes mixing languages in a single text. She has written many books and made films. She is known for refusing easy labels. She calls herself a 'sochologist' (a play on 'chola', meaning urban Aymara woman, and 'sociologist'). She has been a harsh critic of how Indigenous struggles are absorbed and changed by Western academics and Bolivian state politics. She is still active and writing in 2026.

"There can be no discourse of decolonisation, no theory of decolonisation, without a decolonising practice."

Contemporary — 1950 to today

Linda Tuhiwai Smith 1950-present · Aotearoa New Zealand →

Linda Tuhiwai Smith is a Māori scholar from Aotearoa New Zealand. She is one of the most important Indigenous thinkers on research and education in the world today. She was born in 1950 in Whakatāne, a town on the east coast of New Zealand's North Island. Her family belongs to two Māori iwi (tribes): Ngāti Awa on her father's side and Ngāti Porou on her mother's side. Her father, Sir Hirini Moko Mead, is himself a famous Māori scholar and anthropologist. As a teenager, she lived in the United States while her father completed his PhD. It was the late 1960s, a time of huge social change: the civil rights movement, anti-war protests, American Indian activism. These years shaped her political awareness. Back in New Zealand in the 1970s, she joined Ngā Tamatoa, a young Māori activist group that campaigned for te reo Māori (the Māori language) in schools. She became an educator and a scholar. She worked for many years at the University of Waikato, where she held senior leadership roles. She is now a distinguished professor at Te Whare Wānanga o Awanuiārangi, a Māori university. Her 1999 book Decolonizing Methodologies: Research and Indigenous Peoples made her internationally famous. It has been translated into five languages and cited hundreds of thousands of times. In 2023 she won the Rutherford Medal, New Zealand's highest scholarly honour. In 2016 she was appointed to the Waitangi Tribunal, which hears Māori claims against the New Zealand government. She is still active today.

"The word itself, 'research', is probably one of the dirtiest words in the Indigenous world's vocabulary."

Scott Thornbury born 1950 · New Zealand →

Scott Thornbury is a teacher and writer who works in English language teaching. This field is often called ELT for short. He was born in 1950 in New Zealand. Thornbury has spent over thirty years teaching English and training other teachers. He has worked in many countries, including Egypt, the United Kingdom, and Spain. He still lives in Spain. He earned a master's degree from the University of Reading in England. Today Thornbury is an Associate Professor at The New School, a university in New York. He teaches on an online course that trains English teachers. He is also the editor of a well-known series of handbooks for language teachers. Thornbury is famous for his books. He has written more than a dozen, many of them aimed at helping teachers do their job better. Well-known titles include 'How to Teach Grammar' and 'How to Teach Vocabulary'. His writing is clear, practical, and often funny. He is best known for one big idea. With another teacher, Luke Meddings, he helped create an approach called Dogme ELT. This approach asks teachers to rely less on textbooks and more on real conversation in the classroom. Thornbury also writes a popular blog and speaks at conferences around the world.

"Teaching unplugged means trusting the talk: the lesson grows out of what the learners say."

Zaha Hadid 1950 - 2016 · Iraq (later United Kingdom) →

Zaha Hadid was an Iraqi-British architect. She was one of the most important architects of the late 20th and early 21st centuries. She was the first woman to win the Pritzker Prize, the highest honour in architecture, in 2004. Her buildings are known for bold curves, dramatic angles, and shapes that look impossible to build. She was born in 1950 in Baghdad, Iraq. She came from a wealthy and progressive Iraqi family. Her father was a politician and businessman. Her mother was an artist. Iraq in the 1950s was modernising rapidly. Zaha grew up surrounded by modern art and modern architecture. She attended a Catholic school in Baghdad and a boarding school in England. She studied mathematics at the American University of Beirut, in Lebanon, before turning to architecture. In 1972 she moved to London to study at the Architectural Association School of Architecture, one of the most experimental architecture schools in the world. She graduated in 1977. She worked briefly with her former teachers Rem Koolhaas and Elia Zenghelis at OMA. In 1980 she founded her own practice, Zaha Hadid Architects, in London. For her first 15 years, almost none of her designs were built. Her drawings won prizes and inspired other architects, but clients found her buildings too radical to commission. Her breakthrough came with the Vitra Fire Station in Germany, completed in 1993. From then on, her practice grew. By her death she had designed buildings on every inhabited continent. She died suddenly in 2016, aged 65, of a heart attack while being treated for bronchitis in Miami. Her practice continues without her. Her partner Patrik Schumacher has led it since her death. Her best-known buildings include the Aquatics Centre at the 2012 London Olympics and the Heydar Aliyev Centre in Baku, Azerbaijan.

"I don't believe in a 'female sensibility' in architecture. I think there are women who design well, just like there are men who design well."