Of all the gifts bestowed by nature on human beings, hearty laughter must be close to the top.

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.

A book is like a piece of rope; it takes on meaning only in connection with the things it holds together.

Death is not the greatest tragedy in life. The greatest tragedy is what dies inside us while we live. We need not fear death. We need fear only that we may exist without having sensed something of the possibilities that lie within human existence.

An adequate share of humor and laughter represents an essential part of the diet of the healthy person.

Just as there is no loss of basic energy in the universe, so no thought or action is without its effects, present or ultimate, seen or unseen, felt or unfelt.

The need is not to amputate the ego ... but to transcend it.