Any man who wants to be president is either an egomaniac or crazy.

The quest for peace is the statesman's most exacting duty... Practical progress to lasting peace is his fondest hope.

Never send a battalion to take a hill if a regiment is available.

Don't join the book burners. Do not think you are going to conceal thoughts by concealing evidence that they ever existed.

The United States pledges before you-and therefore before the world-its determination to help solve the fearful atomic dilemma-to devote its entire heart and mind to find the way by which the miraculous inventiveness of man shall not be dedicated to his death, but consecrated to his life.

Yet, in holding scientific research and discovery in respect, as we should, we must also be alert to the equal and opposite danger that public policy could itself become the captive of a scientific-technological elite.

If you want total security, go to prison. There you're fed, clothed, given medical care and so on. The only thing lacking... is freedom.