I believe that the ten billion people expected to be present at the end of the century will enjoy a far better quality of life if we conserve half of… - Edward O. Wilson

Human existence may be simpler than we thought. There is no predestination, no unfathomed mystery of life. Demons and gods do not vie for our allegiance. Instead, we are self-made, independent, alone, and fragile, a biological species adapted to live in a biological world. What counts for long-term survival is intelligent self-understanding, based upon a greater independence of thought than that tolerated today even in our most advanced democratic societies.

Nevertheless, an iron rule exists in genetic social evolution. It is that selfish individuals beat altruistic individuals, while groups of altruists beat groups of selfish individuals. The victory can never be complete; the balance of selection pressures cannot move to either extreme. If individual selection were to dominate, societies would dissolve. If group selection were to dominate, human groups would come to resemble ant colonies.

In modern industrialized countries, networks grew to a complexity that has proved bewildering to the Paleolithic mind we inherited. Our instincts still desire the tiny, united band-networks that prevailed during the hundreds of millennia preceding the dawn of history. Our instincts remain unprepared for civilization.