Whether there can be ethical or moral knowledge and, if so, what the nature of that knowledge is, are disputed questions. The questions are often confused with three other issues, namely, the realist-anti-realist debate, the foundationalist-anti-foundationalist debate, and the relativist-anti-relativist debate. Yet the issue of ethical or moral knowledge is distinct from these other issues and does not depend on the answer one gives to them. It does depend importantly on what one considers ethics and morality, and on what one considers knowledge to be.