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.

I believe in the rights of creatures other than man.

Once we open the door to the plutonium economy, we expose ourselves to absolutely terrible, horrifying risks from these people.

We cannot go on fiddling while the earth's wild places burn.

I sort of kept my hand in writing and went to work for the Sierra Club in '52, walked the plank there in '69, founded Friends of the Earth and the League of Conservation Voters after that.

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.

There is more inside you than you dare think.