Social evolution may be the result of intention, but it rarely, if ever, produces the result intended.

A sense of continuity with the rest of creation is a form of religious experience essential to sanity.

Biologically, man is still the great amateur of the animal kingdom; he is unique in his lack of anatomical and physiological specialization.

To ward off disease or recover health, people as a rule find it easier to depend on healers than to attempt the more difficult task of living wisely.

The mechanisms of vis medicatrix naturæ—the most healing power of nature—are so effective that most diseases are self-terminating.

The earth is literally our mother, not only because we depend on her for nurture and shelter but even more because the human sepcies has been shaped by her in the womb of evolution. Our salvation depends upon our ability to create a religion of nature.

You cannot see the Milky Way in New York City any more ... We risk the loss of our sensual perception. And if you lose those, naturally, you try to compensate by other stimulations, by very loud noises, or by bright lights or drugs.