Our problems are man-made, therefore they may be solved by man. And man can be as big as he wants. No problem of human destiny is beyond human beings.

I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the Moon and returning him safely to the Earth. No single space project...will be more exciting, or more impressive to mankind, or more important...and none will be so difficult or expensive to accomplish.

When things don't go well they like to blame presidents; and that's something that presidents are paid for.

The unity of freedom has never relied on uniformity of opinion.

History is a relentless master. It has no present, only the past rushing into the future. To try to hold fast is to be swept aside.

Suspicion on one side breeds suspicion on the other, and new weapons beget counter-weapons.

Compromise does not mean cowardice.