Mathematics and art through the strings as with a bird cage and to see one form within another which excited me." The artists Theo van Doesburg and Piet Mondrian founded the De Stijl movement, which they wanted to "establish a visual vocabulary elementary geometrical forms comprehensible by all and adaptable to any discipline". Many of their artworks visibly consist of ruled squares and triangles, sometimes also with circles. De Stijl artists worked in painting, furniture, interior design and architecture. After the breakup of De Stijl, Van Doesburg founded the Avant-garde Art Concret movement, describing his 1929–1930 "Arithmetic Composition", a series of four black
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