Since the time of the ancient Greeks, we have always felt that there was a close relationship between a strong, vital mind and physical fitness.

The problem of power is how to achieve its responsible use rather than its irresponsible and indulgent use; of how to get men of power to live for the public rather than off the public.

This is not a time to keep the facts from the people-to keep them complacent. To sound the alarm is not to panic but to seek action from an aroused public. For, as the poet Dante once said: 'The hottest places in hell are reserved for those who, in a time of great moral crisis, maintain their neutrality.

I want to emphasize in the great concentration which we now place upon scientists and engineers how much we still need the men and women educated in the liberal tradition, willing to take the long look, undisturbed by prejudices and slogans of the moment, who attempt to make an honest judgment on difficult events.

With all of the history of war, and the human race's history unfortunately has been a good deal more war than peace, with nuclear weapons distributed all through the world, and available, and the strong reluctance of any people to accept defeat, I see the possibility in the 1970's of the President of the United States having to face a world in which 15 or 20 or 25 nations may have these weapons.

A tired nation, said David Lloyd George, is a Tory nation, and the United States today cannot afford to be either tired or Tory.

But Goethe tells us in his greatest poem that Faust lost the liberty of his soul when he said to the passing moment: "Stay, thou art so fair." And our liberty, too, is endangered if we pause for the passing moment, if we rest on our achievements, if we resist the pace of progress. Change is the law of life. And those who look only to the past are certain to miss the future.