M. N. S. Sellers is Regents Professor of the University System of Maryland, Director of the University of Baltimore Center for International and Comparative Law, and president of the International Association for the Philosophy of Law and Social Philosophy (IVR). He was educated at Harvard College, Harvard Law School, and at University and Wolfson Colleges, Oxford, where he was a Rhodes Scholar, a Frank Knox Fellow, and the T. H. Green Scholar. Professor Sellers is co-editor (with Stephan Kirste) of the Encyclopedia of the Philosophy of Law and Social Philosophy (forthcoming) and general editor of the book series IVR Studies in the Philosophy of Law and Social Philosophy. He has been the H. L. A. Hart Fellow at University College, Oxford, a Lauterpacht Fellow at Cambridge University, and the EACLE Professor of Law at Erasmus University, Rotterdam. Among his many books on law and the philosophy of law are: The Sacred Fire of Liberty: Republicanism, Liberalism, and the Law (1998), Republican Legal Theory (2003) and Parochialism, Cosmopolitanism, and the Foundations of International Law (2012).