[...] I want to discuss with you today the status of our strength and our security because this question clearly calls for the most responsible qualities of leadership and the most enlightened products of scholarship. For this Nation's strength and security are not easily or cheaply obtained, nor are they quickly and simply explained. There are many kinds of strength and no one kind will suffice. Overwhelming nuclear strength cannot stop a guerrilla war. Formal pacts of alliance cannot stop internal subversion. Displays of material wealth cannot stop the disillusionment of diplomats subjected to discrimination.

Above all, words alone are not enough. The United States is a peaceful nation. And where our strength and determination are clear, our words need merely to convey conviction, not belligerence. If we are strong, our strength will speak for itself. If we are weak, words will be of no help.

I realize that this Nation often tends to identify turning-points in world affairs with the major addresses which preceded them. But it was not the Monroe Doctrine that kept all Europe away from this hemisphere--it was the strength of the British fleet and the width of the Atlantic Ocean. It was not General Marshall's speech at Harvard which kept communism out of Western Europe--it was the strength and stability made possible by our military and economic assistance.

In this administration also it has been necessary at times to issue specific warnings--warnings that we could not stand by and watch the Communists conquer Laos by force, or intervene in the Congo, or swallow West Berlin, or maintain offensive missiles on Cuba. But while our goals were at least temporarily obtained in these and other instances, our successful defense of freedom was due not to the words we used, but to the strength we stood ready to use on behalf of the principles we stand ready to defend.

This strength is composed of many different elements, ranging from the most massive deterrents to the most subtle influences. And all types of strength are needed--no one kind could do the job alone. [...]

[...] We in this country, in this generation, are--by destiny rather than choice--the watchmen on the walls of world freedom. We ask, therefore, that we may be worthy of our power and responsibility, that we may exercise our strength with wisdom and restraint, and that we may achieve in our time and for all time the ancient vision of "peace on earth, good will toward men." That must always be our goal, and the righteousness of our cause must always underlie our strength. For as was written long ago: "except the Lord keep the city, the watchman waketh but in vain."