"Man's attitude toward nature is today critically important simply because we have now acquired a fateful power to alter and destroy nature. But man is a part of nature, and his war against nature is i…"

"I am not an alarmist, but I am gravely concerned about the future of life on Earth."

"The control of nature is a phrase born of arrogance."

"Our heedless and destructive uses of the earth's resources are a form of self-destruction."

"Who has the time to feel the earth beneath their feet, or the wind in their hair, or the sun on their face?"