“But man is a part of nature, and his war against nature is inevitably a war against himself.”

“Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world. ”

“In nature nothing exists alone.”

“The question is whether any civilization can wage relentless war on life without destroying itself, and without losing the right to be called civilized.”

“The human race is challenged more than ever before to demonstrate our mastery, not over nature but of ourselves.”

“As crude a weapon as the cave man's club, the chemical barrage has been hurled against the fabric of life - a fabric on the one hand delicate and destructible, on the other miraculously tough and resilient, and capable of striking back in unexpected ways. These extraordinary capacities of life have been ignored by the practitioners of chemical control who have brought to their task no "high-minded orientation," no humility before the vast forces with which they tamper.”

“Those who contemplate the beauty of the earth find reserves of strength that will endure as long as life lasts. There is something infinitely healing in the repeated refrains of nature -- the assurance that dawn comes after night, and spring after winter.”