B.S. MIT, 1966
PhD, Columbia University (Philosophy), 1972


Assistant Professor, Philosophy, Carnegie Mellon University, 1973–1979

Associate Professor, 1979–1989

Professor, 1989–2000


Lecturer in the Council of the Humanities and Class of 1932 Fellow in Philosophy, Princeton University, Spring Semester, 1998


Getty Scholar, 1999–2000


Champney Family Professor, Case Western Reserve University/Cleveland Institute of Art, 2001–2011


Clark Fellow, Fall 2004


Senior Fellow, National Humanities Center, 2006–2007


Fulbright-Luce Lectureship, Spring 2009, Academy of Art and Design, Tsinghua University and Central Academy of Fine Arts, Beijing


Adjunct Professor of History of Art and Architecture, University of Pittsburgh, 1 April 2009–Present


Other positions
Participant, “The Concept of Style,” NEH summer Institute in Aesthetics, University of Colorado, June 1977
Summer Stipend, National Endowment for the Humanities, late 1980s, 1995
Visiting Lecturer, American Society for Aesthetics, l991 Summer Institute on Philosophy and the Histories of the Arts, San Francisco, July 22–6, l991
Visiting Scholar, The American Academy in Rome, 8–22 December, l991
Visitor, Department of Art History, University of Auckland, New Zealand, July 22–August 8, 1996, 6 lectures
Visiting lecturer, 4 Swedish Universities, 7 lectures, March 1998
Visiting lecturer, 4 lectures, June 1998, National Academy of Art, Hangzhou, China
Member Graduate Faculty, Art Criticism and Writing, School for Visual Art, 2004–6
Chelsea Art Gallery Guide, Trustees, National Humanities Center, May 4, 2007