It seems that every time mankind is given a lot of energy, we go out and wreck something with it.

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.

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.

We don't have to sacrifice a strong economy for a healthy environment.

Keep close to Nature's heart... and break clear away, once in awhile, and climb a mountain or spend a week in the woods. Wash your spirit clean.

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

Never doubt that a small group of thoughtful, committed citizens can change the world indeed, it's the only thing that ever has.

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