- Fellow, European Studies Centre, St Antony’s College, Oxford (from 2003 to 2005)
- Quondam Fellow, All Souls College (from 2003)
- Prize Fellow, All Souls College (from 1996 to 2003)
- Postgraduate degree, St Antony's College, Oxford (to 1996)
- History of Moderrn Political Thought
- Founding Director, Project in the History of Political Thought, University Center for Human Values, Princeton University
- Co-founder of European College of Liberal Arts, Berlin (2000)
- Visiting Fellow, Remarque Institute, New York University
- Visiting Fellow, Center for European Studies, Harvard
- Visiting Professor, Ecole des Hautes Etudes en Sciences Sociales, Paris and Institut d’Etudes Politiques, Paris