The incest taboo is another major category of primed learning. - Edward O. Wilson

Intertribal aggression, escalating in some cultures to limited warfare, is common enough to be regarded as a general characteristic of hunter-gatherer social behavior.

God remains a viable hypothesis as the prime mover, however undefinable and untestable that conception may be.

Cultural change is the statistical product of the separate behavioral responses of large numbers of human beings who cope as best they can with social existence.