Samuel Freeman works in social and political philosophy, ethics, and philosophy of law. He has written books on Justice and the Social Contract, and on the political philosophy of John Rawls. He edited the Cambridge Companion to Rawls (2002), as well as John Rawls's Lectures on the History of Political Philosophy (2007) and his Collected Papers (1999). He is currently working on papers on the difference principle, and on a manuscript on liberalism and distributive justice.