Blue has no dimensions, it is beyond dimensions, whereas the other colours are not....All colours arouse specific associative ideas, psychologically material or tangible, while blue suggests at most the sea and sky, and they, after all, are in actual, visible nature what is most abstract.
Yves KleinMy monochrome pictures are not my definite works, but the preparation for my works. They are the leftovers from the creative processes, the ashes. My pictures, after all, are only the title-deeds to my property which I have to produce when I am asked to prove that I am a proprietor.
Yves Klein