Allen Buchanan is the James B. Duke Professor of Philosophy, Emeritus at Duke University. He received his PhD from the University of North Carolina at Chapel Hill in 1975. From 2011 until 2014, he was Professor of Law at Duke Law School. Earlier, he was Professor of Philosophy at Trinity College of Arts & Sciences and Professor of Public Policy Studies at Duke’s Sanford School of Public Policy. He has written six books covering such topics as Marx, applied ethics, especially bio-medical ethics, social justice, and international justice, including Justice, Legitimacy, and Self-Determination: Moral Foundations for International Law (2003). Buchanan served as staff philosopher for the President’s Commission on Medical Ethics in 1983. From 1996 to 2000 he served on the Advisory Council for the National Human Genome Research Institute. As a member of the Samaritans of Tucson, he backpacks in water, medical supplies, and food to migrants walking through the Sonoran Desert once a week.