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.
Sen matters because he changed how we measure human progress. For most of the twentieth century, countries were ranked by their economic output, their GDP or income per person. A country that produced more goods and services was considered more developed. Sen argued that this was the wrong measure. What matters is not how much money people have, but what they are actually able to do and to be: whether they can live a long and healthy life, whether they can be educated, whether they can participate in political life, whether they can work and create. He called these real freedoms capabilities. A country in which people are rich on average but many people cannot read, cannot access healthcare, or cannot speak freely in public has not truly developed, even if its GDP is high. This capabilities approach has changed how international development organisations measure and think about progress. It also gives a new philosophical foundation for thinking about justice: a just society is not only one in which income is fairly distributed, but one in which all people have genuine access to the capabilities that make a fully human life possible.
Development as Freedom (1999, Oxford University Press) is Sen's most accessible major work and sets out his capabilities approach in full. The introduction and first chapter are manageable for strong secondary students. For a short overview: the UNDP Human Development Reports, freely available at hdr.undp.org, apply Sen's framework to current global data. The Nobel Prize website has a freely accessible account of his work written for a general audience.
Poverty and Famines (1981, Oxford University Press) is the foundational text on famine and entitlements and is more accessible than its academic origin suggests. Identity and Violence (2006, Norton) is the most accessible of his books for general readers and develops his argument about identity and pluralism. For the Human Development Index: Mahbub ul Haq's Reflections on Human Development (1995, Oxford University Press) gives the perspective of Sen's closest collaborator.
Sen is against economic growth and thinks income does not matter.
Sen never argued that income is unimportant. He argued that income is instrumentally valuable: it matters because it can help provide capabilities and freedoms. His point is that income is not the only thing that matters and is not a reliable proxy for human wellbeing. A development strategy that increases income for some while leaving others without health, education, or political rights has not fully succeeded. Income matters but must be evaluated alongside other dimensions of human development.
The capabilities approach means everyone should have the same capabilities.
Sen argued that all people should have access to a set of basic capabilities, but he deliberately left the specific list open to democratic deliberation rather than imposing a single universal standard. He also distinguished between a person's capability, their genuine opportunity to do something, and their functioning, whether they actually do it. A person who has the capability to eat well but chooses to fast is exercising their freedom. The goal is not to force everyone to exercise every capability but to ensure everyone has the genuine freedom to do so.
Sen showed that democracy automatically solves problems of poverty and inequality.
Sen argued that democracy is a crucial protection against the worst forms of suffering, particularly famine, because it creates political incentives for governments to respond to need. But he did not argue that democracy automatically produces equality or eliminates poverty. Democracies can still have deep inequalities and can still fail large sections of their populations. Sen's point is that democracy creates conditions that make addressing poverty more likely, not that it guarantees it. The quality of democracy, including whether it is genuinely responsive to the poorest, matters enormously.
The Human Development Index was entirely Sen's creation.
The Human Development Index was developed by Sen together with his close collaborator and friend Mahbub ul Haq, a Pakistani economist, and a team of researchers at the United Nations Development Programme. Ul Haq's contribution was crucial: he had the political vision and the institutional connections to turn Sen's capabilities framework into a practical measurement tool adopted by the UN. The HDI is a collaborative achievement that reflects both Sen's philosophical framework and ul Haq's practical and political skill.
The Idea of Justice (2009, Harvard University Press) is Sen's most ambitious philosophical work and engages with the major traditions of political philosophy.
Martha Nussbaum's Creating Capabilities (2011, Harvard University Press) develops Sen's framework in a complementary direction, specifying a list of central capabilities.
The journal World Development and the Journal of Human Development and Capabilities publish the best current academic work in this tradition.
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