"The more I learn about the natural world, the more I am filled with awe."

"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…"

"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 time has come for us to make peace with the earth."

"What is the use of a house if you haven't got a tolerable planet to put it on?"