I have a private plane. But I fly commercial when I go to environmental conferences.

When we realize we can make a buck cleaning up the environment, it will be done!

I did not become a vegetarian for my health, I did it for the health of the chickens.

Never doubt that a small group of thoughtful, committed citizens can change the world indeed, it's the only thing that ever has.

We won't have a society if we destroy the environment.

We learned that economic growth and environmental protection can and should go hand in hand.

People blame their environment. There is only one person to blame - and only one - themselves.

If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.

Unless we keep this planet healthy, everything else is for naught.

Much of the debate over global warming is predicated on fear, rather than science.