- Professor of Philolosphy, Humboldt-Universität zu Berlin
- Professor of Philosophy, University of Basel (from 1997 to 2003)
- Quondam Fellow, All Souls College (from 1997)
- University Lecturer in Philosophy and Fellow, All Souls College (from 1996 to 1997)
- Lecturer, Unviersity of Göttingen (from 1993 to 1995)
- Undergraduate and Postgraduate, Fribourg, Bern and Göttingen Universities (from 1984 to 1991)