Composition with Red Blue and Yellow working relationship, they were contacted by Theo van Doesburg, a painter who frequently wrote about art for different periodicals and whom is considered the propagandist of the De Stijl movement. He invited Mondrian and van der Leck to join his initiative to start an artistic review periodical. They agreed and the result of this was the journal entitled De Stijl. Together they formed an artistic collective that consisted not only of painters but also architects; the movement was confined to strictly Dutch areas due to war. These artists cannot be considered the same. For example, not all De Stijl artists
De Stijl connections in the art world. Around 1915, Van Doesburg started meeting the artists who would eventually become the founders of the journal. He first met Piet Mondrian at an exhibition in Stedelijk Museum Amsterdam. Mondrian, who had moved to Paris in 1912 (and there, changed his name from "Mondriaan"), had been visiting the Netherlands when war broke out. He could not return to Paris, and was staying in the artists' community of Laren, where he met Bart van der Leck and regularly saw M. H. J. Schoenmaekers. In 1915, Schoenmaekers published "Het nieuwe wereldbeeld" ("The New Image of the World"),