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 a letter to Rudolph Steiner; as quoted in Abstract Painting, Michel Seuphor, Dell Publishing Co., 1964, p. 85