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

If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.

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.

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.

We don't have to sacrifice a strong economy for a healthy environment.

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

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

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

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

It seems that every time mankind is given a lot of energy, we go out and wreck something with it.