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

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

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

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

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

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

We learned that economic growth and environmental protection can and should go hand in hand.

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

The environment is everything that isn't me.

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