This page is unfinished. It may be a mere placeholder in the book outline. Or, the text below (if any) may be a summary, or a discussion of what the page will say, or a partial or rough draft.
Ethical nihilism is the stance that ethical claims are all entirely meaningless.
This is wildly implausible, and probably no one can really adopt it, even if some gloomy philosophers claim to be committed to it. So this page can be blessedly brief.