I owe very, very much to Mozart; and if one studies, for instance, the way in which I write for string quartet, then one cannot deny that I have learned this directly from Mozart. And I am proud of it!

There is still plenty of good music to be written in C major.

The principal function of form is to advance our understanding. It is the organization of a piece which helps the listener to keep the idea in mind, to follow its development, its growth, its elaboration, its fate.

In Spring! In the creation of art it must be as it is in Spring!

Lucidity is the first purpose of color in music.

I have never seen faces, but because I have looked people in the eye, only their gazes.

I never was very capable of expressing my feelings or emotions in words. I don't know whether this is the cause why I did it in music and also why I did it in painting. Or vice versa: That I had this way as an outlet. I could renounce expressing something in words.