Chapter 6 turns to Michel Foucault, looking at both his early archaeological work and his introduction of power in the later genealogical writings. It focuses on how his early work examines the rules which precede and make possible judgements. We will see that Foucault derives the term and method of archaeology from Kant’s own work, though Foucault develops his own non-juridical logic of it. It then shows how this attempt to understand thinking as different from judging carries on into Foucault’s later genealogical work with his notion of biopower as an attempt to provide an alternative model of power to what we find in the juridico-discursive model that he argues typifies traditional understandings of it.