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

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

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

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

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.

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

We won't have a society if we destroy 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.

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