... French painter, one of the greatest of the Postimpressionists, whose works and ideas were influential in the aesthetic development of many 20th-century artists and art movements, especially Cubism . CИzanne's art, misunderstood and discredited by the public during most of his life, grew out of Impressionism and eventually challenged all the conventional values of painting in the 19th century through its insistence on personal expression and on the integrity of the painting itself. ...