Human life is now molded to a large extent by the changes that man has brought about in his external environment and by his attempts at controlling body and soul.

Each civilization has its own kind of pestilence and can control it only by reforming itself.

Man could escape danger only by renouncing adventure, by abandoning that which has given to the human condition its unique character and genius among the rest of living things.

It is not man the ecological crisis threatens to destroy but the quality of human life.

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.

There is a demon in technology. It was put there by man and man will have to exorcise it before technological civilization can achieve the eighteenth-century ideal of humane civilized life.