  There is much disagreement about what, exactly, constitutes a moral theory. Some of that disagreement centers on the issue of demarcating the moral from other areas of practical normativity, such as the ethical and the aesthetic. Some disagreement centers on the issue of what a moral theory’s aims and functions are. In this entry, both questions will be addressed. However, this entry is about moral theories as theories, and is not a survey of specific theories, though specific theories will be used as examples.