The fraction of Americans working in occupations concerned primarily with information has increased from 20 to nearly 50 percent of the work force. - 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.

Will we solve the crises of next hundred years? asked Krulwich. “Yes, if we are honest and smart,” said Wilson. “The real problem of humanity is the following: we have paleolithic emotions; medieval institutions; and god-like technology. And it is terrifically dangerous, and it is now approaching a point of crisis overall.” Until we understand ourselves, concluded the Pulitzer-prize winning author of On Human Nature, “until we answer those huge questions of philosophy that the philosophers abandoned a couple of generations ago—Where do we come from? Who are we? Where are we going?—rationally,” we’re on very thin ground.

Self-knowledge will reveal the elements of biological human nature from which modern social life proliferated in all its strange forms.