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

The hand has the richest articulation of space.

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.

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

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

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