Amartya Sen is Lamont University Professor at Harvard University, and also Professor of Economics and Philosophy there. Previously he was the Drummond Professor of Political Economy at Oxford and, earlier, Professor of Economics at the London School of Economics, Delhi University and Jadavpur University. His publications include Collective Choice and Social Welfare; Choice; Welfare and Measurement; Poverty and Famines; On Ethics and Economics; and Inequality Reexamined, among others. He is past president of the Econometric Society, the International Economic Association, the Indian Economic Association and the American Economic Association.