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

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

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

I can find God in nature, in animals, in birds and the environment.

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

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

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

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

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

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