"Racism, pollution and the rest of it are themselves very close to extinction."

"I am the only guinea pig I have."

"Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering."

"Nature is trying very hard to make us succeed, but nature does not depend on us. We are not the only experiment."

"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong."

"Humanity is acquiring all the right technology for all the wrong reasons."

"Culture is an instrument wielded by professors to manufacture professors who when their turn comes, will manufacture professors."

"Let's not escape into mathematics. Let's stay with reality."

"Be wise with speed . A fool at forty is a fool indeed."

"I'm not judging people, I'm judging their actions. It's the same type of distinction that I try to apply to myself, to judge, but not be judgmental."

"Men seldom make passes At girls who wear glasses."

"The past is the only dead thing that smells sweet."