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.

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

Gauss replied, when asked how soon he expected to reach certain mathematical conclusions, that he had them long ago, all he was worrying about was how to reach them!

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

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.

The most important pathological effects of pollution are extremely delayed and indirect.