How do children come to know right from wrong? Where does morality come from? There are two obvious answers to this question: nature or nurture. If you pick nature, then you’re a nativist. You believe that moral knowledge is native in our minds. It comes preloaded, perhaps in our God-inscribed hearts (as the Bible says), or in our evolved moral emotions (as Darwin argued).2 But if you believe that moral knowledge comes from nurture, then you are an empiricist.3 You believe that children are more or less blank slates at birth (as John Locke said).4 If morality varies around the world and across
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