In mathematical quarters, the regular division of the plane has been considered theoretically. ... [Mathematicians] have opened the gate leading to an extensive domain, but they have not entered this domain themselves. By their very nature they are more interested in the way in which the gate is opened than in the garden lying behind it.

Are you really sure that a floor can't also be a ceiling?

He who wonders discovers that this in itself is wonder.

We adore chaos because we love to produce order.

I might be in the basement. I'll go upstairs and check. We adore chaos because we love to produce order. I don't use drugs; my dreams are frightening enough.

I don't use drugs, my dreams are frightening enough.

At moments of great enthusiasm it seems to me that no one in the world has ever made something this beautiful and important.