is professor of philosophy at Yale University. He has published and lectured widely on Heidegger, early modern philosophy, and the philosophy of art and architecture. He is the author of more than 170 articles and reviews and of five books: The Meaning of Modern Art (1968); The Bavarian Rococo Church: Between Faith and Aestheticism (1983); The Broken Frame: Three Lectures (1990); The Ethical Function of Architecture (1997); winner of the American Institute of Architects 8th Annual International Architecture Book Award for Criticism, and Infinity and Perspective (2001). With Christoph Jamme he has edited Martin Heidegger: Kunst, Politik, Technik (1992), which appeared in an English version as Martin Heidegger: Politics, Art, and Technology (1994).