The first man-made satellite to orbit the earth was named Sputnik. The first living creature in space was Laika. The first rocket to the Moon carried a red flag. The first photograph of the far side of the Moon was made with a Soviet camera. If a man orbits the earth this year his name will be Ivan.

Events of October 1962 indicated, as they had all through history, that control of the sea means security. Control of the seas can mean peace. Control of the seas can mean victory. The United States must control the seas if it is to protect your security.

Freedom is indivisible, and when one man is enslaved, all are not free.

I ask particularly that those of you who are now in school will prepare yourselves to bear the burden of leadership over the next 40 years here in the United States, and make sure that the United States - which I believe almost alone has maintained watch and ward for freedom - that the United States meet its responsibility. That is a wonderful challenge for us as a people.

Let us not be blind to our differences-but let us also direct attention to our common interests and to the means by which those differences can be resolved. And if we cannot end our differences, at least we can help make the world safe for diversity. For, in the final analysis, our most common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's future. And we are all mortal.

While we shall never weary in the defense of freedom, neither shall we ever abandon the pursuit of peace.

If we are strong, our strength will speak for itself. If we are weak, words will be of no help.