Abstract art the basis of a new visual art, later to be developed into Cubism by Georges Braque and Pablo Picasso. Post Impressionism as practiced by Paul Gauguin, Georges Seurat, Vincent van Gogh and Paul Cézanne had an enormous impact on 20th-century art and led to the advent of 20th-century abstraction. The heritage of painters like Van Gogh, Cézanne, Gauguin, and Seurat was essential for the development of modern art. At the beginning of the 20th century Henri Matisse and several other young artists including the pre-cubist Georges Braque, André Derain, Raoul Dufy and Maurice de Vlaminck revolutionized the Paris art world
Constant Nieuwenhuys himself artistically and experimented with multiple techniques of art-making. He was inspired by Cubism, especially by Georges Braque. In 1946 his daughter Martha was born, followed by his daughter Olga in 1948. In 1946 Constant travelled to Paris for the first time where he met the young Danish painter Asger Jorn. The friendship between Jorn and Constant later formed the basis for the avant-garde movement CoBrA. July 1948 Constant founded Reflex "" with Corneille, Karel Appel and his brother Jan Nieuwenhuys. The first edition of the magazine "Reflex" was published with a manifesto written by Constant. For Constant art had