"We have to live with the consequences of our actions."

"I find myself in a world in which the physicists have known sin."

"If atomic bombs are to be added as new weapons to the arsenals of a warring world, or to the arsenals of nations preparing for war, then the time will come when mankind will curse the names of Los Ala…"

"The atomic bomb is a demonstration of the power of science, but it is also a demonstration of the folly of man."

"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."