Amartya Kumar Sen (born 3 November 1933) is an eminent economist and philosopher, who since 1972 has taught and worked in India, the United Kingdom, and the United States. Sen has made contributions to welfare economics, social choice theory, economic and social justice, economic theories of famines, and indices of the measure of well-being of citizens of developing countries. **Source**: [Amartya Sen](https://en.wikipedia.org/wiki/Amartya_Sen) on Wikipedia.