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

Much of the debate over global warming is predicated on fear, rather than science.

Not all is doom and gloom. We are beginning to understand the natural world and are gaining a reverence for life - all life.

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

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

No one should be able to enter a wilderness by mechanical means.

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.

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

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