Born 24 June 1940. Married, 2 children.

Education and professional career

• University of Bonn, University of Freiburg/Brsg
• 1966 : Doctorate
• 1966-1970 : Lecturer, University of Bonn
• 1970-1972 : Senior Lecturer, University of Göttingen
• 1972 : Habilitation
• 1972-1978 : Professor, University of Göttingen
• 1974-1975 : Lecturer, University of Hamburg
• Since 1980 : Professor, Free University of Berlin
• 1995 : Lecturer, Collège de France
• 1998-1999 : Visiting Professor at the Collège de France, holding the annual European Chair

Fellowships

• 1963-1964 : Paris, French government scholarship holder
• 1979-1980 : Princeton, N. J., USA, Institute for Advanced Study
• 1985-1986 : Santa Monica, CA, USA, Scholar, J. Paul Getty Center for the History of Art and the Humanities

International activities

• 1992 : Organization of the ^XXVIIIth International Art History Congress, Berlin
• 1992-1996 : President of the Comité international d'histoire de l'art (CIHA)
• Since 1997 : Founding Director of the German Art History Center, Paris