You know my tendency is always to imagine things in my head and to work from this idea. I am going to explain my theory of blue, yellow and red, which will probably seem as 'Spanish' to you as my face.
Blue is the male principle, astringent and spiritual. Yellow is the female principle, gentle, gay and spiritual. Red is matter, brutal and heavy and always the color to be opposed and overcome by the other two. For example, if you mix serious, spiritual blue with red, you intensify the blue to unbearable sorrow, and yellow the conciliatory, the complementary color to purple, becomes indispensable.. .If you mix red and yellow to make orange, you turn passive, feminine yellow into a Fury, with sensual force that again makes cool, spiritual blue indispensable, the man..

The harvest of your Summer is displayed on our walls. I like some of them terrifically. The 'certainty' with which most of it is done makes me feel ashamed of myself. The thousand steps that I need to take for a picture are of no advantage, as I sometimes foolishly used to think. Things must change.

All the pictures [in the exhibition, 1910] include a plus-factor, which robs the public [in Munich] of her pleasure but which is in every case the principal merit of the work; the completely spiritualized, de-materialized awardness of perception, which our fathers, the artists of the nineteenth century, never even tried to achieve in their 'pictures'. This bold undertaking, to take the 'matiere', which Impressionism sank its teeth into, and spiritualize it, is a necessary reaction, which began with Gauguin in Pont-Aven, and has already fostered innumerable experiments.. .The way the Munich public condemns the exhibition is almost amusing.

I make the most outrageous demands on my imagination and leave aside everything else, theory and nature study, as other people understand them. This is the only way I can work, drawing on nothing but my own faculty of imagination with I feed without stint – except in working hours.

I am trying to intensify my feeling for the organic rhythm in all things, trying to establish a pantheistic contact with the tremor and flow of blood in nature, in animals, in the air – trying to make it all into a picture, with new movements and with colours that reduce our old easel paintings to absurdity.