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.

Human life implies adventure, and there is no adventure without struggles and dangers.

The belief that we can manage the Earth and improve on Nature is probably the ultimate expression of human conceit, but it has deep roots in the past and is almost universal.

The very process of living is a continual interplay between the individual and his environment, often taking the form of a struggle resulting in injury or disease.

Man not only survives and functions in his environment, he shapes it and he is shaped by it.

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.

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.