| 1952 | Born in Düsseldorf |
| 1972 | Participation in the documenta 5 in Kassel. In a discussion Abraham David Christian invited Joseph Beuys to the legendary "Boxkampf für direkte Demokratie durch Volksabstimmung" in the exhibition rooms of the Documenta, which took place in the room of Ben Vautier in the Fridericianum on October 8th 1972 at the end of the exhibition of the documenta. |
| 1978 | Awarded with the Villa-Romana prize. |
| 1982 | Participation in the documenta 7, withdrawal from the public art scene. |
| Lives and works in Düsseldorf, New York and Hayama |
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