"I am not advocating for a return to the Stone Age, but for a more responsible approach to our use of technology."

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

"The most alarming of all man's assaults upon the environment is the contamination of air, earth, rivers, and sea with dangerous and even lethal materials."

"The fact that we are so ignorant of the long-term effects of these chemicals is terrifying."

"There was a time when man had a closer communion with the natural world, but now we have become so separated. We have lost our sense of wonder."