History of painting group's theories. Next to 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). Proponents of De Stijl sought to express a new utopian ideal of spiritual harmony and order. They advocated pure abstraction and universality by a reduction to the essentials of form and colour; they simplified visual compositions to the vertical
Piet van Stuivenberg Piet van Stuivenberg Pieter Antonie (Piet or Pieter) van Stuivenberg (January 10, 1901 - December 16, 1988) was a Dutch artist, who was active as sculptor, painter, lithgrapher, and graphic artist. Born in Schiedam, Van Stuivenberg received his art education at the Academy of Fine Arts and Applied Sciences now Willem de Kooning Academy) in Rotterdam. From 1921 to 1927 he attended the evening art classes in sculpting. Van Stuivenberg started his sculptor career as stonemason, and was first influenced by the expressionism and later abstract working with geometric shapes and tighter. In Rotterdam he jointed the art society R33,