It seems that every time mankind is given a lot of energy, we go out and wreck something with it.

Perhaps we'll realize that each of us has not one vote but ten thousand or a million.

The Sierra Club is a very good and a very powerful force for conservation and, as a matter of fact, has grown faster since I left than it was growing while I was there! It must be doing something right.

All I know about thermal pollution is that if we continue our present rate of growth in electrical energy consumption it will simply take, by the year 2000, all our freshwater streams to cool the generators and reactors.

Polite conservationists leave no mark save the scars upon the Earth that could have been prevented had they stood their ground.

Truth and beauty can still win battles. We need more art, more passion, more wit in defense of the Earth.

For how many people do you think might yet stand on this planet before the sun grows cold? That's the responsibility we hold in our hands.