Do unto others as they wish, but with imagination.

I have forced myself to contradict myself in order to avoid conforming to my own taste.

I believe that the artist doesn't know what he does. I attach even more importance to the spectator than to the artist.

I was interested in ideas, not merely visual products. I wanted to put painting once again at the service of the mind.

Art is like a shipwreck; it's every man for himself.

If a shadow is a two-dimensional projection of the three-dimensional world, then the three-dimensional world as we know it is the projection of the four-dimensional Universe.

The curious thing about that moustache and goatee is that when you look at the Mona Lisa it becomes a man. It is not a woman disguised as a man; it is a real man, and that was my discovery, without realising it at the time.