Between 1955 and 1965, Paul van Hoeydonck (Belgium, b.1925) was at the very center of artistic developments in Brussels, Antwerp, Paris, Venice, Milan, Dusseldorf, and New York. He was associated with the influential ZERO group. His friends and associates included critic Pierre Restany and artists Piero Manzoni, Pol Bury, Yves Klein, Heinz Mack, Otto Piene, Daniel Spoerri, Jean Tinguely, and Lucio Fontana.