"We have made a thing, a most terrible weapon, that has altered the nature of the world. We have made a thing that has made it impossible for us to live without changing our whole way of life."

"Both the man of science and the man of action live always at the edge of mystery, surrounded by it."

"I believe that in the long run, the only way we can survive is to make the world safe for peace."

"The great thing about science is that it is a way of life that teaches you that you are wrong."

"The atomic bomb is a symbol of our responsibility to future generations."