"From the day that the impressionists liberated painting, the modern picture set out at once the structure itself on contrasts; instead of submitting to a subject, the painter makes an insertion and uses a subject in the service of purely plastic means.. ..[the contemporary painter] must prepare himself in order to confer a maximum of plastic effect on means that have not yet been used. He must not become an imitator of the new visual objectivity, but be a sensibility completely subject to the new state of things."