How is Nietzsche’s genealogy of morality relevant to his revaluation of values? I consider and reject three accounts: contingency accounts, pedigree accounts, and unmasking accounts. I then propose an alternative account. On this view, Nietzsche provides a ‘deconstructive genealogy’ that indicates whether and where we should expect to find unity in our current moral practices. Moreover, Nietzsche’s history contributes to a critique of contemporary morality because it reveals that morality is unlikely to have the kind of unity required by many (...) of its defenders. After explaining and defending this account of genealogical critique in GM, I show how it can be generalized to domains besides morality. (shrink)