Today continuing poverty and distress are a deeper and more important cause of international tensions, of the conditions that can produce war, than previously.

It would be especially tragic if the people who most cherish ideals of peace, who are most anxious for political cooperation on a wider than national scale, made the mistake of underestimating the pace of economic change in our modern world.

Understanding the nature of conflict leads to peace.

And I have lived since - as you have - in a period of cold war, during which we have ensured by our achievements in the science and technology of destruction that a third act in this tragedy of war will result in the peace of extinction.

Every state has not only the right but the duty to make adequate provision for its own defense in the way it thinks best, providing it does not do so at the expense of any other state.

The scientific and technological discoveries that have made war so infinitely more terrible for us are part of the same process that has knit us all so much more closely together.

Prime ministers require the hide of a rhinoceros, the morals of St. Francis, the patience of Job, the wisdom of Solomon, the strength of Hercules, the leadership of Napoleon, the magnetism of a Beatle and the subtlety of Machiavelli.