Take a course in good water and air and in the eternal youth of Nature you may renew your own. Go quietly, alone no harm will befall you.

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.

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

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.

I think the cost of energy will come down when we make this transition to renewable energy.

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

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

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

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