I know few significant questions of public policy which can safely be confided to computers. In the end, the hard decisions inescapably involve imponderables of intuition, prudence, and judgment.

Leadership and learning are indispensable to each other.

To that world assembly of sovereign states, the United Nations, our last best hope in an age where the instruments of war have far outpaced the instruments of peace, we renew our pledge of support - to prevent it from becoming merely a forum for invective - to strengthen its shield of the new and the weak - and to enlarge the area in which its writ may run.

The world is very different now. For man holds in his mortal hands the power to abolish all forms of human poverty, and all forms of human life.

Truth is a tyrant-the only tyrant to whom we can give our allegiance. The service of truth is a matter of heroism.

We celebrate the past to awaken the future.

Nearly forty years ago, a distinguished Prime Minister of this country ... said, 'They may not be angels but they are at least our friends.'* I must say that I do not think that we probably demonstrated in that forty years that we are angels yet, but I hope we have demonstrated that we are at least friends.