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 der Sanden Piet van der Sanden Petrus Joannes Antonius "Piet" van der Sanden (11 November 1924 – 18 January 2015) was a Dutch politician and journalist. He was a member of the House of Representatives of the Netherlands between 1971 and 1972 and again from 1973 to 1989 for the Catholic People's Party and later the Christian Democratic Appeal. He also served a stint as member of the European Parliament between 1973 and 1974. Van der Sanden was born in Gouda on 11 November 1924. During World War II he was studying at the gymnasium when he was sent to a working