He was a Fellow of Hollins University, where he taught philosophy from 1965 to 1989, and was the William R. Kenan, Jr. Professor in the Humanities and Philosophy at the College of William & Mary from 1989 to 2001, subsequently retiring as professor emeritus.
From 2000 to 2011 he was on the volunteer Board of Directors of Post-Polio Health International, and served as its president and chair from 2006 to 2009.
Books authored
Habilitation, Health, and Agency: a Framework for Basic Justice. New York: Oxford University Press, 2012. E-book, 2013.
A New Stoicism. Princeton: Princeton University Press, 1998.
Paperback issued by Princeton University Press, 1999.
E-book, 2010.
Revised Edition, 2017.
Reciprocity. London and New York: Routledge, 1986. Pbk issued by the University of Chicago Press, 1990. Reissued by Routledge in hbk and e-book, 2014.
Property Rights: Philosophic Foundations. London and New York, Routledge & Kegan Paul, 1977. Pbk, 1980. Reissued by Routledge in hbk and e-book, 2014.
On Justifying Moral Judgments. London: Routledge & Kegan Paul, 1973. Reissued by Routledge in hbk and e-book, 2014.
Books edited with Charlotte B. Becker
Encyclopedia of Ethics. Second edition in three volumes. New York: Routledge, 2001. (First Edition in 2 volumes: New York: Garland Publishing, 1992.)
A History of Western Ethics. Second Edition, revised with expanded index and glossary. New York: Routledge, 2003. (First Edition, New York: Garland Publishing, 1992).
Book edited with Kenneth Kipnis
Property: Cases, Concepts, and Critiques. Englewood Cliffs, New Jersey: Prentice-Hall, 1984.
General editor for book series
Ethical Investigations: A Routledge Series of Article Collections. New York: Routledge, 2003. Two collections (6 vols. each) of classic journal articles. Carl Wellman, ed., Rights and Duties; Peter Vallentyne, ed., Equality and Justice.