This wonderful article, which he is in the process of expanding into a book, explores his very insightful analysis of different foundations for liberal and conservative morality. When liberals talk about morality they are almost always talking about two different basic intuitions – intuitions about harm and care. That is, we don’t want people to be harmed and we want to care for people when they are hurting. But there are other moral buttons in the human moral imagination that liberals don’t pay much attention to that are still very present and lively and salient in the conservative moral imagination. Those are what Haidt calls the authority foundation, the in-group, out-group foundation and the sacreds versus disgust foundation. Authority is the sense of hierarchy and the sense that everything should be in its proper place. The leaders should lead and the followers should follow, people should know their station in life.