Colour is a power which directly influences the soul.

The artist must be blind to "recognized" and "unrecognized" form, deaf to the teachings and desires of his time. His open eyes must be directed to his inner life and his ears must be constantly attuned to the voice of inner necessity.

Form itself, even if completely abstract ... has its own inner sound.

With cold eyes and indifferent mind the spectators regard the work. Connoissers admire the "skill" (as one admires a tightrope walker), enjoy the "quality of painting" (as one enjoys a pasty). But hungry souls go hungry away. The vulgar herd stroll through the rooms and pronounce the pictures "nice" or "splendid." Those who could speak have said nothing, those who could hear have heard nothing.

(...) an inner feeling called "Stimmung" by the germans and best translated as sentiment (it is to be regreted that this word, sentiment, which is meant to describe the poetical efforts of an artist living soul, has been misused and finally, ridiculed. Was there ever a great word that the masses did not try immediatly to cheapen and desecrate?) (...)

The artist must train not only his eye but also his soul.

It should not be forgotten that art is not a science where the latest 'correct' theory declares the old to be false and erases it.

The organic laws of construction tangled me in my desires, and only with great pain, effort, and struggle did I break through these 'walls around art.

Art is not vague production, transitory and isolated, but a power which must be directed to the improvement and refinement of the human soul.