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

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

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

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

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

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

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

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

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

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