A penetrating observer of social problems has pointed out recently that whereas wealthy families once were the chief benefactors of the universities,… - Rachel Carson

we live in a time when change comes rapidly-a time when much of that change is, at least for long periods, irrevocable. This is what makes our own task so urgent. It is not often that a generation is challenged, as we today are challenged. For what we fail to do-what we let go by default, can perhaps never be done.

So nature does indeed need protection from man; but man, too, needs protection from his own acts, for he is part of the living world. His war against nature is inevitably a war against himself. His heedless and destructive acts enter into the vast cycles of the earth, and in time return to him.

The chemicals to which life is asked to make its adjustment are no longer merely the calcium and silica and copper and all the rest of the minerals washed out of the rocks and carried in rivers to the sea; they are the synthetic creations of man’s inventive mind, brewed in his laboratories, and having no counterparts in nature.