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

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

People blame their environment. There is only one person to blame - and only one - themselves.

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

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.

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

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.

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