"The only way to make sense out of change is to plunge into it, move with it, and join the dance."

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

"The atomic bomb is a symbol of man's mastery over nature, but also of his potential for self-destruction."

"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 …"

"We have made a thing, a most terrible weapon, that has altered the nature of the world and of man."