I find that teaching and the students keep life going, and I would never accept any position in which somebody has invented a happy situation for me where I don't have to teach. Never.

All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't.

There is enough energy in a single cubic meter of space to boil all the oceans in the world.

The present situation in physics is as if we know chess, but we don't know one or two rules.

An ordinary fool isn't a faker; an honest fool is all right. But a dishonest fool is terrible!

There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely with the work. The trouble with computers is that you 'play' with them!

The highest forms of understanding we can achieve are laughter and human compassion.