Rachel Carson...on man and his environment
It took hundreds of millions of years to produce the life that now inhabits the earth - eons of time in which that developing and evolving and diversifying life reached a state of adjustment and balance with its surroundings. The environment, rigorously shaping and directing the life it supported, contained elements that were hostile as well as supporting. Certain rocks gave out dangerous radiation. Even within the light of the sun, from which all life draws its energy, there were short-wave radiations with power to injure. Given time, time not in years but in millennia, life adjusts, and a balance has been reached. For time is the essential ingredient. But in the modern world, there is no time.
The rapidity of change and the speed with which new situations are created follow the impetuous and heedless pace of man rather than the deliberate pace of nature. Radiation is no longer merely the background radiation of rocks, the bombardment of cosmic rays, the ultraviolet of the sun that have existed before there was any life on earth. Radiation is now the unnatural creation of man's tampering with the atom. 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.
- Silent Spring, 1962