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

"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."

"Either war is obsolete or men are."

"Dare to be naive."

"He is not deemed to give consent who is under a mistake."

"The older I get, the greater power I seem to have to help the world; I am like a snowball - the further I am rolled, the more I gain."

"I would like to be known as a person who is concerned about freedom and equality and justice and prosperity for all people."

"With stupidity the gods themselves struggle in vain."

"The constitution does not provide for first and second class citizens."

"No man remains quite what he was when he recognizes himself."