Professor, University of Virginia School of Law

Emeritus Professor of the Philosophy of Law, University of Oxford

University of Dayton School of Law

Full Professor of Tax Law, University of São Paulo

Melden Chair in Moral Philosophy and Distinguished Professor of Philosophy, University of …

Professor of Philosophy, USC

Profesor titular de Filosofía del Derecho. Professor of Philosophy of Law. Universitat de …

Professor, Head of Department, Belarusian National Technical University

McCormick Professor of Jurisprudence, Princeton University

Associate Professor, University of Denver, Sturm College of Law