... we are obliged to produce the truth by the power that demands truth and needs it in order to function: we are constrained, we are condemned to admit the truth or to discover it. Power constantly asks questions and questions us; it constantly investigates and records; it institutionalizes the search for the truth, professionalizes it, and rewards it. ... In a different sense, we are also subject to the truth in the sense that truth lays down the law: it is the discourse of truth that decides, at least in part; it conveys and propels effects of power.