"It is a matter of profound gravity that the world has changed, and we must change with it."

"The atomic bomb is a weapon that has no limit to its destructive power. It is a weapon that can destroy cities, and it is a weapon that can destroy nations."

"We have to find a way to build a better world, a world where the atomic bomb is no longer a threat."

"If I had to choose between the two evils, I would rather have a world with no nuclear weapons than a world with nuclear weapons."

"We must be prepared to make the effort to understand the world, and to live in it as human beings."