There is also ample reason today to believe that the species of life known as Homo Sapiens is not eternal.  We have fouled our environmental nest so thoroughly, we have overpopulated our world so irresponsibly, we have developed weapons of mass destruction so totally that human survival faces, at best, long odds.  We human beings appear to be incidental, both to the past life and to the future life of this planet.  Life seems quite capable of going on with or without human participation.  Yet all of our basic religious understandings and interpretations of life still assume a radically anthropocentric universe.  The meaning of human life is thought by all religious systems to be central to every other condition.

John Shelby Spong

“Why Christianity Must Change or Die”