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
Bart van der Leck based on this alphabet for the avant garde magazine "Flax". Architype van der Leck, a digital revival of that face by David Quary and Freda Sack of The Foundry, was released in 1994. Bart van der Leck claimed to be the father of the avant-garde movement. In his own words he said: "Mondrian came to my place one day with Doesburg, whom I had never seen before. When Doesburg noticed an abstract painting right on the easel, he exlaimed: 'If that is to be the painting of the future, may I be hanged right now!' Well, a few months later,