All methods are sacred if they are internally necessary. All methods are sins if they are not justified by internal necessity.

The observer must learn to look at the picture as a graphic representation of a mood and not as a representation of objects.

The artist is the hand that, by touching this or that key, sets the soul vibrating automatically.

The nightmare of materialism, which has turned the life of the universe into an evil, useless game, is not yet past; it holds the awakening soul still in its grip.

The circle is the synthesis of the greatest oppositions. It combines the concentric and the eccentric in a single form and in equilibrium. Of the three primary forms, it points most clearly to the fourth dimension.

The sound of colors is so definite that it would be hard to find anyone who would express bright yellow with bass notes or dark lake with treble.

Color is the keyboard. The eye is the hammer. The soul is the piano, with its many strings.