Born 25 April 1921. He executed two free standing paintings for Tweede Vrijzinnig Christelijk Lyceum, The Hague, in 1949-1956. His collaborators on the project were J.J.P. Oud and Wessel Couzijn. In 1948 he co-founded the Cobra group in Paris. His mature work evolved from studying the art of children, and is known for an expressionistic graphic style.