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

The surface of things gives enjoyment, their interiority gives life.

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.

If you follow nature you will not be able to vanquish the tragic in any real degree in your art... We must free ourselves from our attachment to the external, for only then do we transcend the tragic, and are enabled consciously to contemplate the repose which is within all things.

This new plastic idea will ignore the particulars of appearance, that is to say, natural form and colour. On the contrary it should find its expression in the abstraction of form and colour, that is to say, in the straight line and the clearly defined primary colour.

The relation of color and the relation of proportion are both based on the relation of position.

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.