It is reasonable to expect the doctor to recognize that science may not have all the answers to problems of health and healing.

I have learned never to underestimate the capacity of the human mind and body to regenerate - even when prospects seem most wretched. The life force may be the least understood force on earth.

Humanity today is not safe in the presence of humanity. The old cannibalism has given way to anonymous action in which the killer and the killed do not know each other, and in which,indeed, the very fact of mass death has the effect of making mass killing less reprehensible than the death of a single individual. In short, we have evolved in every respect except our ability to protect ourselves against human intelligence. Our knowledge is vast but does not embrace the workings of peace.

What a man really says when he says that someone else can be persuaded by force, is that he himself is incapable of more rational means of communication.

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.

I've learned that next to the atomic bomb, the greatest danger is defeatism, despair, and inadequate awareness of what human beings possess. I feel that any problem that can be defined is capable of being resolved. Out of this has come my conviction that no person knows enough to be a pessimist.

Do you prefer that you be right or happy?