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.

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

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

The environment is everything that isn't me.

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

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

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

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

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