Does truth have a history? Whereas Bernard William denies it and only allows a history of truthfulness, I defend the possibility of a critical history or genealogy of truth. Because a trifling relativistic historicization of truth leads to a paradoxically a-historic and pacifistic conception of truth, one must first establish the methodological concepts with which a genealogy of truth can avoid both problems. Three first steps towards such concepts can be found in some of Michel Foucault’s lectures, which lead the genealogy of truth to focus on the origins of truth’s force.