There is vast needless suffering in the world. As the world's "most intelligent" species, we humans have the ability and resources and therefore the moral obligation to eliminate this unnecessary suffering. "Myth and Madness: Evolution of Human Nature" traces the evolutionary origins of tribalism - the tribalism that keeps us from cooperating to solve our mutual global problems. In spite of our prodigious abilities and our vast scientific and technological achievements, we humans have an evolved defect - one which allows us to accept myths as realities. These myths keep us from solving the global problems we face. This work traces the evolutionary origins of the defect and suggests ways that we can eliminate it and bring about the species-wide cooperation necessary to create a more sane and humane world for ourselves and for our posterity.