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

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

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

Local innovation and initiative can help us better understand how to protect our 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.

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

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.

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

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