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

Birds are indicators of the environment. If they are in trouble, we know we'll soon be in trouble.

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

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

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.

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

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

The environment is everything that isn't me.

Take a course in good water and air and in the eternal youth of Nature you may renew your own. Go quietly, alone no harm will befall you.