"The atomic bomb is too terrible to be used as a weapon of war."

"The physicists have known sin; and this is a knowledge which they cannot lose. It is a knowledge which has changed them forever."

"It is not a weapon for innocent people. It is not a weapon for cities."

"The atomic bomb is not merely a new weapon, but a new thing in the world."

"It is perfectly obvious that the whole world is going to hell. The only possible chance that it might not is that we do not attempt to prevent it from doing so."