• As a student of conservation biology, I believe that characteristics with survival value will ultimately prevail. There is no survival value in pessimism. If you think failure is inevitable, that view will probably become self-fulfilling.

    Denis Hayes: As a student of conservation biology, I believe that characteristics with survival value will ultimately prevail. There is no survival value in pessimism. If you think failure is inevitable, that view will probably become self-fulfilling.
    "The Rumpus Interview with Earth Day organiser Denis Hayes". Interview with Melissa Price, therumpus.net. April 22, 2009.