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

"The atomic bomb is a mirror that reflects our own humanity, both our capacity for good and our capacity for evil."

"I am a physicist. I am not a philosopher. I am not a theologian. I am a physicist. And I have done my job."

"We have to learn to live with the knowledge that we have the power to destroy ourselves, but also the power to save ourselves."

"I think that we have made a very dangerous discovery, and that we have a very great responsibility."