"The finality of extinction is awesome, and not unrelated to the finality of eternity. Man, striving to imagine what might lie beyond the long light years of stars, beyond the universe, beyond the void, feels lost in space; confronted with the death of species, enacted on earth so many times before he came, and certain to continue when his own breed is gone, he is forced to face another void, and feels alone in time. Species appear and, left behind by a changing earth, they disappear forever, and there is a certain solace in the inexorable." –Wildlife in America, 1959