Crown Professor of Ethics
Professor of Philosophy
Duke University


Emotion and virtue (Princeton, 2020), in press.
The Limits of Lockean Rights in Property (Oxford, 1995).

Selected Papers | Complete

"Acts, agents, and the definition of virtue," Oxford Studies in Normative Ethics 7 (2017): 251-74.
"A plea for moral deference," Ethics & Politics 27 (2015): 41-59.
"A human right to health? Some inconclusive scepticism," Proceedings of the Aristotelian Society, Supplementary Volume 86 (2012): 239-65.
"Duties and their direction," Ethics 120 (2010): 465-94.
"Errors about errors: Virtue theory and trait attribution," Mind 111 (2002): 47-68.
"What is the general will?," The Philosophical Review 109 (2000): 545-581.


Ph.D. in philosophy, 1993.  University of California, Berkeley.
B.Phil. in philosophy, 1988.  University of Oxford.
B.A. (Hons.), 1986.  McGill University.  First class honours in economics and philosophy.

Previous Appointments

Associate Professor of Philosophy, University of Toronto. 2002-2007
Senior Fellow, Department of Clinical Bioethics, National Institutes of Health. 2000-2002
Assistant Professor of Philosophy, Princeton University. 1993-2000