Without Wilderness, The World's A Cage.

For How Many People Do You Think Might Yet Stand On This Planet Before The Sun Grows Cold? That's The Responsibility We Hold In Our Hands.

I Sort Of Kept My Hand In Writing And Went To Work For The Sierra Club In '52, Walked The Plank There In '69, Founded Friends Of The Earth And The League Of Conservation Voters After That.

Keep Your Rivers Flowing As They Will, And You Will Continue To Know The Most Important Of All Freedoms-the Boundless Scope Of The Human Mind To Contemplate Wonders, And To Begin To Understand Their Meaning.

Bring Diversity Back To Agriculture. That's What Made It Work In The First Place.

Even If You Build The Perfect Reactor, You're Still Saddled With A People Problem And An Equipment Problem.