The Greeks understood that mind and body must develop in harmonious proportions to produce a creative intelligence. And so did the most brilliant intelligence of our earliest days - Thomas Jefferson - when he said, not less than two hours a day should be devoted to exercise. If the man who wrote the Declaration of Independence, was Secretary of State, and twice President, could give it two hours, our children can give it ten or fifteen minutes.

There are many people in the world who really don't understand-or say they don't-what is the great issue between the free world and the Communist world. Let them come to Berlin!

Change is the law of life. And those who look only to the past or present are certain to miss the future.

In a time of domestic crisis, men of goodwill and generosity should be able to unite regardless of party or politics.

A man may die, nations may rise and fall, but an idea lives on.

Diplomacy and defense are not substitutes for one another. Either alone would fail.

Arms alone are not enough to keep the peace. It must be kept by men.