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

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

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

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.

The environment is everything that isn't me.

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

When we try to pick out anything by itself, we find it hitched to everything else in the universe.

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

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

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.