This paper tries to motivate three desiderata for historical epistemologies: (a) that they should be reflective about the pedigree of their conceptual apparatus; (b) that they must face up to the potentially relativistic consequences of their historicism; and (c) that they must not forget the hard-won lessons of microhistory (i.e. historical events must be explained causally; historical events must not be artificially divided into internal/intellectual and external/social “factors” or “levels”; and constructed series of homogenous events must not be treated as (...) quasi-organisms). Ian Hacking’s work on styles of reasoning and Lorraine Daston’s and Peter Galison’s investigation into epistemic virtues are used to identify the costs of neglecting these desiderata. (shrink)