De Stijl was published by the Dutch painter, designer, writer, and critic Theo van Doesburg that served to propagate the group's theories. Along with Theo van Doesburg, the group's principal members were the painters Piet Mondrian, Vilmos Huszár, and Bart van der Leck, and the architects Gerrit Rietveld, Robert van 't Hoff, and J. J. P. Oud. The artistic philosophy that formed a basis for the group's work is known as "Neoplasticism"—the new plastic art (or "Nieuwe Beelding" in Dutch). According to Theo van Doesburg in the introduction of the magazine "De Stijl" 1917 no.1, the "De Stijl"-movement was a reaction to
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