"Development that meets the needs of the present without compromising the ability of future generations to meet their own needs."

United Nations http://www.un.org/esa/sustdev/csd/review.htm

"We believe sustainable development begins at home and is supported by effective domestic policies, and international partnerships. Self-governing people prepared to participate in an open world marketplace are the very foundation of sustainable development."

US State Department, http://www.state.gov/g/oes/sus/

"We pledge to transmit this city not only not less, but far greater and more beautiful than it was transmitted to us." Oath written by Pericles. From 594 to 404 B.C., literature, science, philosophy, and the arts flourished in Athens. The birthplace of democracy had its golden age during the rule of statesman Pericles (c. 495-429 B.C.), who made sweeping political reforms and actively supported the arts. Pericles is credited with the Athenian oath of fealty.

"Leave your campground better than you found it." Scouting Principle.