RICHARD J. ARNESON is a professor of philosophy at the Univer-
sity of California at San Diego. He has held visiting appointments at
California Institute of Technology and the University of California at
Davis. He has written papers on philosophical ideas in literature, on
the interpretation of the works of John Stuart Mill and Karl Marx, and
on contemporary theories of justice, where his current research inter-
ests lie. He is an associate editor of the journal Ethics and a member
of the board of editorial consultants for NOMOS, the annual yearbook
of the American Society for Political and Legal Philosophy.

TOM L. BEAUCHAMP is a professor of philosophy at Georgetown Uni-
versity. He is the author of Philosophical Ethics ( 2nd ed., 1991), and
co-author of A History and Theory of Informed Consent ( 1986), Principles
of Biomedical Ethics ( 3rd ed., 1989), and Hume and the Problem of Causa-
tion ( 1981). He is general editor of the critical edition of the literary,
political, and philosophical works of Hume.

LAWRENCE C. BECKER is a professor of philosophy and Kenan Pro-
fessor of Humanities at the College of William and Mary. He is the
editor, with Charlotte Becker, of the Encyclopedia of Ethics ( 1992) and
the author of several books, including Property Rights ( 1977, 1980) and
Reciprocity ( 1986, 1990).

STEVEN M. CAHN is a professor of philosophy and former provost
and vice-president for academic affairs at the Graduate School of the
City University of New York. Previously he taught at Vassar College,
New York University, and the University of Vermont, where he chaired

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