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.

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

You may be able to fool the voters, but not the atmosphere.

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

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

Not all is doom and gloom. We are beginning to understand the natural world and are gaining a reverence for life - all life.

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

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

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