My work is a game, a very serious game.

Only those who attempt the absurd will achieve the impossible. I think it's in my basement... let me go upstairs and check.

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

I never got a pass mark in math ... Just imagine - mathematicians now use my prints to illustrate their books.

Science and art sometimes can touch one another, like two pieces of the jigsaw puzzle which is our human life, and that contact may be made across the boderline between the two respective domains.

Hands, are the most honest part of the human body, they cannot lie as laughing eyes and the mouth can.

We adore chaos because we love to produce order.

It is human nature to want to exchange ideas, and I believe that, at bottom, every artist wants no more than to tell the world what he has to say.

I can't keep from fooling around with our irrefutable certainties. It is, for example, a pleasure knowingly to mix up two and three dimensionalities, flat and spatial, and to make fun of gravity.

So let us then try to climb the mountain, not by stepping on what is below us, but to pull us up at what is above us, for my part at the stars; amen.

Wonder is the salt of the earth.

Life is but a day

What more delightful avocation than to take a piece of land and by cautious experimentation to prove how it works. What more substantial service to conservation than to practice it on one's own land?

The first of America's 79 million baby boomers turned 60 this month. Time flies when you're growing old.

In mathematics, the art of asking questions is more valuable than solving problems.

During many a single week, I daresay, more money is spent in New York upon useless and evil things than would suffice to run the kingdom of Denmark for a year.

Time is what turns kittens into cats.

I open my arms wide and declare with love that I deserve and accept all good!

I'm going to tell it straight, that yes, I'd love to be traded

Leisure can be one of the Mothers of Philosophy.

Where art thou, Muse, that thou forget'st so long / To speak of that which gives thee all thy might?