I think the environment should be put in the category of our national security. Defense of our resources is just as important as defense abroad. Otherwise what is there to defend? – Robert Redford, Yosemite National Park dedication, 1985

We are living too fast—yea, we are consuming the blessings given us, at a rate that may leave future generations to sit out in the cold and freeze to death. – W.A. Pryal, “Lumber for Hives: Some Interesting Data on the Way Lumber is being

There are no passengers on Spaceship Earth. We are all crew. – Marshall McLuhan, 1964

Such is the audacity of man, that he hath learned to counterfeit Nature, yea, and is so bold as to challenge her in her work. – Pliny the Elder, The Natural History, translated by Philemon Holland