Imi Knoebel was born in Dessau, Germany, in 1940. From 1963 to 1971, he was a student of Joseph Beuys at the Kunstakademie Düsseldorf. His first exhibition, IMI + IMI, with Imi Giese, a fellow student of Beuys’s, was held in Copenhagen in 1968. Since that time, Knoebel has exhibited his works in Documentas 5 (1972), 6 (1977), 7 (1982), and 8 (1987), and at Sonsbeek (1971). In 1987 Knoebel oversaw an installation of his own work, as well as that of Beuys and Blinky Palermo, for the inaugural exhibitions at Dia’s galleries on West 22nd Street in New York City. In 1996–97, a retrospective of his work traveled throughout Europe, to such venues as Haus der Kunst, Munich; Stedelijk Museum, Amsterdam; and Institut Valencià d’Art Modern, Centre Julio González, Valencia. In summer 2009, he will have a major retrospective at the Hamburger Bahnhof and the Neue Nationalgalerie in Berlin. His monumental cycle, 24 Colors—for Blinky, 1977, is currently on view at Dia:Beacon. He lives and works in Düsseldorf.