"We may be likened to two scorpions in a bottle, each capable of killing the other, but only at the risk of his own life."

"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."

"There must be no more wars."

"The atomic bomb is a weapon that has no place in the hands of nations that are not prepared to use it wisely."

"It is not possible to be a scientist unless you believe that it is good to learn. It is not possible to be a scientist unless you believe that it is of the highest value to learn."