"I have been to Hagen, saw two Matisses, which enchanted me. A large collection of Japanese masks. Sublime! 'Neue Vereinigung' were hung in a bad light. ... Kandinsky, Jawlensky, Bechteleff and Erbslöh have immense artistic sensibility. But the means of expression are to big for what they have to say. The sound of their voice is so good, so fine, that what is being said get lost. Consequently a human element is missing. They concentrate, too much, I think, on form. There is much to be learnt from their efforts. But early things by Kandinsky, and a few by Jawlensky too, seem a little empty to me. And Jawlensky's heads looked at me a little bit too much with colors. With blue and green. I hope you understand what I mean."

“'Time' has a large part to play in looking at a picture. A picture gets covered in the course of its creation by a rhythmically measured network of colors, lines and dots, which evokes in its final form a total of living movement. The eye jumps from a blue to red, to green , to a black line, suddenly comes upon a sharp white eruption, follows it, floats on to... It is impossible to take it all in at once. Time is inseparable from surface.”

“I have been in Munich this week, and got to know the whole 'Neue Künstlervereinigung' at Tannhauser's – Jawlensky, Kandinsky etc. For Munich they are very, very good, I was interested.”

“I have just been thinking that the Blaue Reiter does not really represent my work. I have always been convinced that other things of mine are more important. ... Narcism, fake heroism, and blindness have a lot to answer for, in the 'Blaue Reiter'. All those high-sounding words about the birth of a great spiritual moment still resounding in my ears. Kandinsky can air his personal opinion about that or any other revolution he cares to mention. But I dislike the whole thing. ... Take my advice – work, and don't spent so much time thinking about blue riders or blue horses.”

“Cubism, Futurism, Expressionism, abstract painting, are only names given to a change which our artistic thinking wants to make and is thinking. Nobody has ever painted fallen raindrops suspended in the air, they've always been depicted as streaks . Now people are painting cabs rattling, lights flickering, people dancing, all-in the same way . That is thew whole frightfully simple secret of Futurism. Its very easy to prove its artistic feasibility, for all the philosophizing that has been raised against it. Space, surface and time are different things, which ought not to be mixed together, is the continuous cry. If only it were possible to separate them. I can't do it.”

“It was the desire for living, vital expression which built Gothic cathedrals, which created Mozart sonatas. I believe it is going to stay that way for long time to come.”

“The new discovery that I have made in painting is the following. There are chords of colors, let's say a certain red and green, which move, shimmer when you look at them. Now if you're looking at a tree in a landscape, you can either look at the tree, or at the landscape, but not both, because of the stereoscopic effect. Now, when you are painting something three-dimensional, the chromatic sound which shimmers is the three-dimensional effect of colour, and when you paint a landscape, and the green foliage shimmers a little with the blue sky showing through it, that happens because the green is on a different plane from the sky in nature too. Finding the space-shaping energies of colour, instead of contenting ourselves with a dead chiaroascuro, is our finest task.”