Just as counterpoint and harmony follow their own laws, and differ in rhythm and movement, both formal tensions and color tensions have a development… - Hans Hofmann

Since one cannot create 'depth' by carving a hole in the picture, and since one should not attempt to create the illusion of depth by tonal gradation, depth as a plastic reality must be two dimensions in a formal sense as well in the sense of color. 'Depth' is not created on a flat surface as an illusion, but as a plastic reality. The nature of the picture plane makes it possible to achieve depth without destroying the two-dimensional essence of the picture plane. .A plane is a fragment in the architecture of space. When a number of planes are opposed one to another, a spatial effect results. A plane functions in the same manner as the walls of a building.. .Planes organized within a picture create the pictorial space of its composition.. .The old masters were plane-consciousness. This makes their pictures restful as well as vital...

The physical carrier is overshadowed by a relation. The relation creates an overtone. The physical carrier is absorbed by this overtone. The overtone spontaneously transforms the means of creation into a spiritual reality. The mystery of creation is then revealed.

Each expression-medium has a life of its own. Regulated by certain laws, it can be mastered only by intuition during the act of creating. It is in the nature of the laws which govern every expression medium that two separate entities, related through empathy, always produce a higher third of a purely spiritual nature. This spiritual third manifests itself as a quality which carries emotional content. This quality is the opposite of illusion; it is the reality of the spirit.