"The optimist thinks this is the best of all possible worlds. The pessimist fears it is true."

"Both the man of science and the man of action live always at the edge of mystery, surrounded by it."

"In some sort of crude sense which no vulgarity, no humor, no overstatement can quite extinguish, the physicists have known sin; and this is a knowledge which they cannot lose."

"When you see something that is technically sweet, you go ahead and do it and you argue about what to do about it only after you have had your technical success. That is the way it was with the atomic bomb."

"The police came to me to say I had death threats and that I had to be careful!"

"Life isn't fair. It's just fairer than death, that's all."

"The mortal enemies of Social Security and Medicare are those who, in contempt of the plain arithmetic, continue to mislead Americans that we should change nothing."

"Ever since 'Lassie' and 'Old Yeller', I won't watch animal movies. Animals in movies always die."