"Knowledge cannot be pursued without morality."

"We have to learn to live with the knowledge that we have changed the world forever, and that we can never go back."

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

"The atomic bomb is a testament to the fact that human beings are capable of both great good and great evil."

"We are not here to curse the darkness, but to light the candle that can guide us through it."