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
6 thinkers
Clear all filters
Medieval — 500 to 1500
Leonardo da Vinci 1452 - 1519 · Florence and Milan, Italy
Leonardo da Vinci was an Italian artist, scientist, and inventor. He was born in 1452 in the small town of Vinci, near Florence, in what is now Italy. His name means 'Leonardo from Vinci'. He was the son of a young woman named Caterina, who was probably a peasant or servant, and a wealthy notary named Ser Piero. His parents never married. Leonardo grew up in his father's family but was treated as a separate, somewhat outside figure. He showed great talent young. As a teenager he was apprenticed to the artist Andrea del Verrocchio in Florence. He learned painting, sculpture, and many practical crafts. Around the age of 30, he moved to Milan to work for the Duke, Ludovico Sforza. He stayed in Milan for nearly 20 years. He painted, designed weapons, planned buildings, and filled notebooks with ideas. When French armies invaded Milan, Leonardo moved on. He worked in Florence, Rome, and other Italian cities. He served various rulers, including Cesare Borgia and the Medici. In 1516, the king of France, Francis I, invited him to come and live in France. Leonardo accepted. He spent his last three years in a small castle near the king's palace at Amboise. He died there in 1519, aged 67. He never married and had no children. He was probably gay, though the evidence is indirect. He was vegetarian, unusual for his time. He left thousands of notebook pages full of drawings and ideas, most of which were not read for centuries.
"Learning never exhausts the mind."
Early Modern — 1500 to 1800
Sin Saimdang 1504-1551 · Korea (Joseon)
Sin Saimdang was a Korean artist, calligrapher, poet, and Confucian scholar of the mid-Joseon period. She is widely regarded as the most accomplished female artist of the Joseon dynasty (1392-1910) and one of the most celebrated women in Korean history. She has been the first woman depicted on a South Korean banknote (the 50,000 won note, issued from June 2009). Her real personal name was Sin In-seon. 'Saimdang' was her pen name, taken from Tairen, the mother of King Wen of Zhou in classical Chinese tradition; her name signalled her aspiration to be like that exemplary figure. Her other pen names included Saim, Inimdang, and Imsajae. She was born on 29 October 1504 (5 December by the Western calendar) in Bukpyeong-chon village, Jukheon-ri, Gangneung, Gangwon Province, at her maternal grandparents' home (Ojukheon, still preserved as a historic site). Her father was Sin Myeong-hwa, a government official and friend of the reformist scholar Jo Gwang-jo, who chose not to be politically active during the factional struggles of his time. Her mother was Lady Yi. She was the eldest of five sisters; her parents had no sons. Her maternal grandfather, recognising her early talent, taught her as he would have taught a grandson: classical Chinese, history, philosophy, and the Confucian canon. She also developed exceptional skill in calligraphy, embroidery, and painting from childhood. At nineteen she married Yi Won-su, a man from a respectable but poor family. Her father had specifically chosen Yi because he was willing to let her continue her artistic work. The marriage produced eight children, five sons and three daughters. Her third son was Yi I (1536-1584), pen name Yulgok, who would become one of the two greatest Neo-Confucian philosophers in Korean history. Saimdang continued painting and writing throughout her marriage. She died of sudden illness in Pyongan region on 17 May 1551 at age 47.
"Talent alone will not make a good painting. One must first calm oneself, then carefully observe the object to be painted. If the object's true essence is not understood with certainty, the painting will lack vitality."
Johann Sebastian Bach 1685-1750 · Germany
Johann Sebastian Bach (1685-1750) was a German composer and organist usually regarded as the supreme master of Baroque music and one of the greatest composers in any tradition. He was born in Eisenach into a large and distinguished family of working musicians — the name Bach had become almost a synonym for musician in parts of central Germany. He was orphaned at ten and raised by an older brother who trained him in the organ and in composition. From fifteen he worked continuously as a professional musician: as a choirboy, as a church organist in small towns, as a court musician at Weimar and then Cothen, and from 1723 until his death as Thomaskantor in Leipzig, where he was responsible for the music at several city churches, the Thomasschule, and important civic occasions. He wrote music almost constantly. His output includes more than two hundred sacred cantatas, the St Matthew and St John Passions, the B minor Mass, the two books of the Well-Tempered Clavier, the Brandenburg Concertos, the Goldberg Variations, The Art of Fugue, dozens of organ works, and hundreds of other pieces. He married twice and had twenty children, several of whom became important composers in the following generation. He went blind in his last year and died after an unsuccessful eye operation. His music was not widely celebrated after his death and had slipped into relative obscurity by 1800; its revival in the nineteenth century, launched by Felix Mendelssohn's 1829 performance of the St Matthew Passion, began a long process by which Bach came to be regarded as a central figure of world music.
"I was obliged to work hard. Whoever is equally industrious will succeed equally well."
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."