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.

Laughter is inner jogging.

Assume responsibility for the quality of your own life

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.

All men - whether they go by the name of Americans or Russians or Chinese or British or Malayans or Indians or Africans - have obligations to one another that transcend their obligations to their sovereign societies.

We have learned to live in a world of mistakes and defective products as if they were necessary to life. It is time to adopt a new philosophy in America.

Laughter serves as a blocking agent. Like a bullet-proof vest, it may help protect you against the ravages of negative emotions that can assault you in disease.