Huemer's purpose with this book is a strange combination of ambitious and non-ambitious. The book is ambitious because it wishes to present a coherent picture of how to approach philosophizing about morality, and it tries to act out these lessons in the discussion of various views in metaethics. The book is also ambitious in that what it claims to establish is in some sense a quite robust metaphysical system which many contemporary authors shy away from. In other ways though, the book is not ambitious, many of the views that Huemer tries to make sound controversial and revolutionary are in fact, if not the consensus, at least less controversial than he tries to make it sound. Further, Huemer's attacks on his opponents rarely culminate in intriguing new objections, instead he tends to prefer Moorean shifts and psychologizing his opponents. Sometimes Huemer makes such low blows that one has to wonder whether he misunderstands his opponents, or if he is delibe...