"The idea of research has often made painting go astray, and made the artist lose himself in mental lucubrations. Perhaps this has been the principal fault of modern art. The spirit of research has poisoned those who have not fully understood all the positive and conclusive elements in modern art and has made them attempt to paint the invisible and, therefore, the unpaintable."

“For a long time I limited myself to one colour — as a form of discipline.”

“The more technique you have, the less you have to worry about it. The more technique there is, the less there is.”

“The smell of opium is the least stupid smell in the world.”

“I also often hear the word 'evolution'. Repeatedly I am asked to explain how my painting evolved. To me there is no past or future in my art. If a work of art cannot live always in the present it must not be considered at all. The art of the Greeks, of the Egyptians, of the great painters who lived in other times, is not an art of the past; perhaps it is more alive today than it ever was. Art does not evolve by itself, the ideas of people change and with them their mode of expression.”

“I would like to manage to prevent people from ever seeing how a picture of mine has been done. What can it possibly matter? What I want is that the only thing emanating from my pictures should be emotion. .”

“I deal with painting as I deal with things, I paint a window just as I look out of a window. If an open window looks wrong in a picture, I draw the curtain and shut it, just as I would in my own room. In painting, as in life, you must act directly.”