Cubism did not accept the logical consequences of its own discoveries; it was not developing abstraction towards its own goal, the expression of pure reality.

I think you too recognize the important relationship between philosophy and art, and it is just this relationship that most painters deny. The great masters do grasp it, unconsciously; but I believe that a painter's conscious spiritual knowledge will have a much greater influence upon his art, and that it would be due only to a weakness in him, or lack of genius, should this spiritual knowledge be harmful to his art.

Intellect confuses intuition.

Colored planes, by their position and size as well as by their value, express only relationships, not forms.

Art on the contrary sought this harmony in practice [of art itself]. More and more in its creations it has given inwardness to that what surrounds us in nature, until, in Neo-Plasticism, nature is no longer dominant. This achievement of balance may prepare the way for the fulfillment of man and signal the end of (what we call) art.

In art the search for a content which is collectively understandable is false; the content will always be individual.

abstract art is not the creation of another reality but the true vision of reality.