Amartya Sen is one of the world's leading public intellectuals. He is Professor of Economics and Professor of Philosophy at Harvard. He was Master of Trinity College, Cambridge, from 1998 to 2004, and won the Nobel Prize for Economics in 1998. His many celebrated books include Development as Freedom (1999), The Argumentative Indian (2005) and The Idea of Justice (2010). They have been translated into more than 30 languages.