If you give a 3-year-old two pieces of candy and ask him if he wants to share one of them, he will almost certainly say no. It’s not until age 7 or 8 that even half the children are willing to share. But it does mean that social norms fall upon prepared ground. We come equipped to learn fairness and other virtues…

People who behave morally don’t generally do it because they have greater knowledge; they do it because they have a greater sensitivity to other people’s points of view. Hauser reported on research showing that bullies are surprisingly sophisticated at reading other people’s intentions, but they’re not good at anticipating and feeling other people’s pain.

The moral naturalists differ over what role reason plays in moral judgments. Some, like Haidt, believe that we make moral judgments intuitively and then construct justifications after the fact. Others, like Joshua Greene of Harvard, liken moral thinking to a camera. Most of the time we rely on the automatic point-and-shoot process, but occasionally we use deliberation to override the quick and easy method. We certainly tell stories and have conversations to spread and refine moral beliefs.