The doctor knows that it is the prescription slip itself, even more than what is written on it, that is often the vital ingredient for enabling a patient to get rid of whatever is ailing him.

The old emphasis upon superficial differences that separate peoples must give way to education for citizenship in the human community.

The control center of your life is your attitude.

History is a vast early warning system.

The message from the moon which we have flashed to the far corners of this planet is that no problem need any longer be considered insoluble.

The real wealth, not only of America, but of the world, is in the resources of the ground we stand on, and in the resources of the humankind.

Wisdom consists of the anticipation of consequences.