David Estlund is the Lombardo Family Professor of Humanities, in the Department of Philosophy at Brown University. He has been teaching moral and political philosophy at Brown University since 1991. He previously taught at University of California, Irvine, and has spent fellowship years at the Program in Ethics at Harvard, and at Australian National University. He has received fellowships from the American Council of Learned Societies, and the National Endowment for the Humanities. Estlund's research focuses on ethics and social/political philosophy, particularly the areas of liberalism, justice, and democracy. He is the author of "Democratic Authority: A Philosophical Framework," (Princeton University Press, 2008), and recently edited The Oxford Handbook of Political Philosophy (2012). His recent papers include: "Human Nature and the Limits (If Any) of Political Philosophy," in Philosophy & Public Affairs, Summer 2011,"Liberal Associationism and the Rights of States," in Social Philosophy and Policy (February, 2014), and "Utopophobia," Philosophy & Public Affairs, (Spring 2014), pp. 113-34. He received his B.S. in art, and M.A. and Ph.D. in philosophy from University of Wisconsin, Madison.