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

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.

What comes from oneself, is nearly from no one. There is only me as a link.

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

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.