In the early 1920's a group of architects and artists, influenced by some of the ideas of DaDa, formed a movement called de Stijl (Dutch for The Style). Theirs was a utopian philosophical approach to aesthetics, centered in a publication called de Stijl, which presented their ideas and designs. The founder of the publication and leader of the group was Theo van Doesburg, an architect. Other important participants were Gerrit Rietveld and Piet Mondrian.
The philosophy was based on functionalism, with a severe and doctrinaire insistence on the rectilinearity of the planes, which seem to slide across one another like sliding panels. All surface decoration except color was to be eliminated, and only pure primary hues, plus black and white were to be allowed.
The most important thing about this group was their ideas, since they managed to build very few of their designs. One important exception is Gerrit Rietveld's Schroeder House, which is the most complete realization of the de Stijl aesthetic. Not only the house, but also the furnishings and decoration were planned by Rietveld. In spite of the apparently small output of this group, they would be very influential on subsequent design styles.
The initial source of their ideas came from DaDa notions about dispensing with the pretentious elitist design aesthetics of the pre war era. Some of the early work of Frank Lloyd Wright, which had been published in Europe in 1910, influenced their notions about form. Japanese sources were also of significance, though these ideas may have been derived through the work of Wright.