Zurich University of the Arts
In 1957, he began teaching at the Zurich University of the Arts, replacing Ernst Keller as a professor of graphic design. He was professor of graphic design at Zurich University of the Arts from 1957 to 1960, and guest lecturer at the University of Osaka from 1961, and the Ulm School of Design (German: Hochschule für Gestaltung Ulm) from 1963.