Keep close to Nature's heart... and break clear away, once in awhile, and climb a mountain or spend a week in the woods. Wash your spirit clean.

When we try to pick out anything by itself, we find it hitched to everything else in the universe.

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.

Harmony with land is like harmony with a friend you cannot cherish his right hand and chop off his left.

By polluting clear water with slime you will never find good drinking water.

I can find God in nature, in animals, in birds and the environment.

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

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

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

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