"Boundaries are actually the main factor in space, just as the present, another boundary, is the main factor in time."

"In my work, I have never had any use for anything that I have known in advance."

"To look is one thing, to see is another thing; to see is very difficult, normally; to look is to try to see. I have looked and I hope I have seen."

"The hand has the richest articulation of space."

"Whatever I know how to do, I've already done. Therefore I must always do what I do not know how to do."

"One can never know enough. The unknown and its call lies even in what we know."

"Art is that which comes to a man, and stands between himself and an implacable witness: the work."