Larry Alexander, Warren Distinguished Professor at the University of San Diego School of Law.

Peter Benson, Professor of Law at the University of Toronto.

Brian H. Bix, Professor of Law at the University of Minnesota Law School.

Allen Buchanan, Professor of Philosophy at the University of Arizona.

Jules L. Coleman, Wesley Newcomb Hohfeld Professor of Jurisprudence at Yale Law School and Professor of Philosophy at Yale University.

Timothy A. O. Endicott, Fellow in Law at Balliol College, Oxford.

John Finnis, Professor of Law and Legal Philosophy in the University of Oxford and Robert and Frances Biolchini Professor at Notre Dame Law School.

John Gardner, Professor of Jurisprudence at the University of Oxford.

David Golove, Professor of Law at New York University School of Law.

Leslie Green, Professor of Law and Philosophy at the Osgoode Hall Law School and in the Department of Philosophy at York University, Toronto.

Kent Greenawalt, University Professor at Columbia Law School.

Kenneth Einar Himma, Lecturer in Philosophy at the University of Washington.

F. M. Kamm, Professor of Philosophy, Medicine (Bioethics), and Law School Affiliated Faculty, New York University.

Jody S. Kraus, Professor of Law at the University of Virginia Law School.

Christopher Kutz, Assistant Professor of Law in the Jurisprudence and Social Policy Program, Boalt Hall School of Law, University of California at Berkeley.

Brian Leiter, Charles I. Francis Professor of Law, Professor of Philosophy, and Director of the Law & Philosophy Program at the University of Texas at Austin.

William Lucy, Professor of Law at Keele University.

Timothy Macklem, Lecturer in Law at King's College London.

(p. x) Andrei Marmor, Associate Professor at the Interdisciplinary Centre, Hertzlia, Israel, and Long-term Visiting Professor at the University of Chicago Law School.

Gerald J. Postema, Cary C. Boshamer Professor of Philosophy and Professor of Law at the University of North Carolina at Chapel Hill.

Arthur Ripstein, Professor of Law and Philosophy at the University of Toronto.

Scott J. Shapiro, Professor of Law at the Benjamin N. Cardozo School of Law, Yeshiva University.

Edward Stein, Associate Professor of Law at the Benjamin N. Cardozo School of Law, Yeshiva University.

Martin Stone, Professor of Law and Associate Professor of Philosophy at Duke University.

Jeremy Waldron, Maurice and Hilda Friedman Professor of Law, and Director of the Center for Law and Philosophy, at Columbia University.

Benjamin C. Zipursky, Associate Dean of Academic Affairs and Professor at Fordham University School of Law.