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

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

You may be able to fool the voters, but not the atmosphere.

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

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

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

No one should be able to enter a wilderness by mechanical means.

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.

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