The teaching program, which in addition to the program of Art History and Aesthetics is also embedded in the program at the Department of Philosophy at the Institute for Philosophy at the University of Kassel, covers the subject in its full breadth, but focuses on the areas of aesthetics and art theory.
Studies in the fields of philosophy, comparative literature, and art history at the University of Bonn, where he received his doctorate in 1989.
From 1990 to 1996 research associate at the Philosophical Seminar A of the University of Bonn and editor of the Allgemeine Zeitschrift für Philosophie.
In 1996/97 teaching positions at the University of Bonn and the Kunstakademie Düsseldorf.
Habilitation in 1998 at the University of Bonn.
Since 2000 Professor for Philosophy at the Kunsthochschule Kassel.
Since 2006 Managing Editor of ‘Wittgenstein-Studien. Internationales Jahrbuch für Wittgenstein-Forschung’ and since 2009 president of the International Ludwig Wittgenstein Society (ILWG).