Victor Vassarely

"Vassarely's world of form, following principles that are based by preference on mathematical and scientific analogies and imitate cybernetic processes in calculating the solution, was developed in four separate phases. In the first, Vasarely became acquainted with the doctrines of the Bauhaus; in the second phase, along with his work as a commercial artist, he elaborated models for a system of graphic theory of his own; in the third, he worked out Surrealist themes' and in the fourth he made his own contribution to geometrical abstraction."
Werner Spies