Young species are acquisitive and territorial and grabby, and mature species co-operate, as in a …
— Elisabet Sahtouris, "The Big Picture: Strategies for Transforming the Global Economy" (1999)
You get mature ecosystems such as rainforests and prairies where you have far more cooperation than you have hostile competition.
— Elisabet Sahtouris , "After Darwin: Reuniting Spirituality with Science in Order to Form a New World View" (2003)