Amartya Sen   Amartya Sen, a Nobel prize-winning economist, delivers a talk entitled Freedom v. Equality: Really? April 13 at the LAW Auditorium. An Indian citizen, Sen is a professor emeritus of economics and philosophy at Harvard University and master of Trinity College, Cambridge University. He is also honorary president of Oxfam International, the human rights and antipoverty organization. His address was part of the Jon Templeton Lectures on Freedom, Markets, and Economic Justice, which are presented by BU's Institute on Race and Social Division. Photo by Michael Hamilton