"We have made a thing, a most terrible weapon, that has altered the nature of the world. We have made a thing that has made it impossible for us to live without changing our whole way of life."

"In some sort of crude sense which no vulgarity, no humor, no overstatement can quite extinguish, the physicists have known sin."

"I never accepted Communist dogma or theory."

"We have used a weapon that has changed the course of history."

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