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
Pieter van der Kruk Pieter van der Kruk Pieter "Piet" van der Kruk (born 13 August 1941) is a retired Dutch heavyweight weightlifter and shot putter. He won five national weightlifting titles (1964, 1965, 1967–1969) and four shot put titles (1964, 1965, 1967 and 1969), and held the national shot put record from 1967 to 1976. He qualified for the 1968 Summer Olympics both as a shot putter and weightlifter; he chose to compete in weightlifting only and finished in ninth place. After retiring from competitions van der Kruk worked as a national weightlifting coach. From 1988 to 1998 he was a member of