"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."

"We have to find a way to control this weapon, or it will control us."

"The atomic bomb is a call to action, a call to build a better future for all."

"The atomic bomb is a stark reminder that we are living in a new era, an era of unprecedented power and unprecedented danger."

"When you see something that is technically sweet, you go ahead and do it and you argue about what to do about it only after you have had your technical success. That is the way it was with the atomic …"