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

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

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.

Local innovation and initiative can help us better understand how to protect our environment.

The environment is everything that isn't me.

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.

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

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

I did not become a vegetarian for my health, I did it for the health of the chickens.

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