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.

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

The only way forward, if we are going to improve the quality of the environment, is to get everybody involved.

The environment is everything that isn't me.

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.

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

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

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

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