They claim this mother of ours, the Earth, for their own use, and fence their neighbors away from her, and deface her with their buildings and their refuse.

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

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

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

I firmly believe that we can have a healthy environment and a sustainable timber industry.

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

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

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

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

Never doubt that a small group of thoughtful, committed citizens can change the world indeed, it's the only thing that ever has.