The book begins with an overview of metaethics and a rejection of the metaethics/normative ethics distinction, and discusses the strengths and limitations of the popular idea that morality is a set of rules for how we treat one another. It then explains subjectivist, intersubjectivist, and objectivist accounts of the truth conditions of moral statements, . It considers Divine Command Theory and Kant's categorical imperatives, in his Groundwork of...