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.

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

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

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

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

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

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

I firmly believe that we can have a healthy environment and a sustainable timber industry.

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

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