Doesburg, Theo van (redactie) - DE STIJL, internationaal maandblad... zesde jaargang 1924-1925 no 9 - 1925

De Stijl is a Dutch art movement, named after the magazine De Stijl, founded in 1917 in Leiden. The main members of De Stijl were Theo van Doesburg, Piet Mondriaan, Vilmos Huszár, Bart van der Leck, Antony Kok, J.J.P. Oud, Jan Wils, Robert van 't Hoff, Gerrit Rietveld, and Georges Vantongerloo. De Stijl is primarily a project of artist and publicist Theo van Doesburg, the self-proclaimed founder, editor, and propagandist of De Stijl.

The members of De Stijl aimed for a radical reform of art that kept pace with the technological, scientific, and social changes in the world. This reform consisted of using a minimal amount of colors (primary colors, combined with black, white, and gray) and adopting the simplest possible design (preferably according to the orthogonal system) (source: wiki).