"A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."

"It is characteristic of all deep human problems that they are not to be approached without some humor and some bewilderment."

"Drama is imagination limited by logic. Mathematics is logic limited by imagination."

"A poor fool indeed is he who adopts a manner of thinking (meant) for others!"

"My grandfather once told me that there were two kinds of people: those who do the work and those who take the credit. He told me to try to be in the first group; there was much less competition."

"If my religion is true, it will stand up to all my questioning; there is no need to fear."

"Men are more accountable for their motives, than for anything else; and primarily, morality consists in the motives, that is in the affections."

"I think God is as much a basic ingredient in the universe as neutrons and positrons. This is the prime force, when we look around the universe."

"We can forgive a man for making a useful thing, as long as he does not admire it. The only excuse for making a useless thing is that one admires it intensely. All art is quite useless."

"Being a woman is a terribly difficult task, since it consists principally in dealing with men."