The uncertain biological basis of morality. Robert Wright’s review of Joshua Greene’s Moral Tribes” Emotion, Reason, and the Gap between Us and Them and Paul Bloom’s Just Babies: The Origins of Good and Evil. Which would do more to help us get along with them — a moral theory we can all agree on or a better understanding of how we are wired to think and feel about them?  “If Greene thinks that getting people to couch their moral arguments in a highly reasonable language will make them highly reasonable, I think he’s underestimating the cleverness and ruthlessness with which our inner animals pursue natural selection’s agenda. We seem designed to twist moral discourse—whatever language it’s framed in—to selfish or tribal ends, and to remain conveniently unaware of the twisting. So maybe the first step toward salvation is to become more self-aware.”