Science and technology have freed humanity from many burdens and given us this new perspective and great power. This power can be used for the good of all. If wisdom governs our actions; but if the world is mad or foolish, it can destroy itself just when great advances and triumphs are almost without its grasp.

Science seems ready to confer upon us, as its final gift, the power to erase human life from this planet.

The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.

I do not believe that civilization will be wiped out in a war fought with the atomic bomb. Perhaps two-thirds of the people of the earth will be killed.

The release of atom power has changed everything except our way of thinking... the solution to this problem lies in the heart of mankind. If only I had known, I should have become a watchmaker.

You just can't have this kind of war. There aren't enough bulldozers to scrape the bodies off the streets.