Bart van der Leck Bart van der Leck Bart van der Leck (26 November 1876, Utrecht – 13 November 1958, Blaricum) was a Dutch painter, designer, and ceramicist. With Theo van Doesburg and Piet Mondrian he founded the De Stijl art movement. Son of a house painter, he started his career learning how to make stained glass in a shop in Utrecht. An example of his later stained glass work is in the Kröller-Müller Museum in Hoge Veluwe, Netherlands. After having met Mondrian and van Doesburg and having founded the Stijl movement with them, his style became completely abstract, as did Mondrian's. But after
Piet Van Waeyenberge Piet Van Waeyenberge Piet Paul August, Baron Van Waeyenberge (born Ghent 27 October 1938) is a Belgian businessman. He is a son of Camille Van Waeyenberge and a brother of Jozef Van Waeyenberge. He was one of the founders, and is currently president, of business club De Warande. He is married to Wina Proesmans and together they have 3 children. He graduated in 1956 from high school at the Sint-Jan Berchmanscollege in Brussels and obtained a licentate in Commercial and Financial Sciences at the Katholieke Universiteit Leuven in 1960. In 1962 he obtained a Master of Science in Agricultural Economics