"We knew the world would not be the same. A few people laughed, a few people cried, most people were silent."

"In the spring of 1936, I was introduced by friends to Jean Tatlock. In the autumn, I began to court her. We were at least twice close enough to marriage to think of ourselves as engaged."

"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."

"The most important thing in life is to learn how to give out love, and to let it come in."

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