In using the term ‘genealogy’, Foucault proclaimed his connection to Nietzsche. ‘Genealogy’ analyses what Foucault thought about the genealogical method, how it compared to Nietzsche’s, and to what extent he used it. Both Nietzsche and Foucault offer many problematic, yet different, remarks on genealogy. Foucault is thoroughly Nietzschean in one respect: the critical intent with which he employs his genealogy. Foucault’s genealogies deconstruct, by showing their real origin, official meanings and evaluations involved in a society’s self-understanding. Foucault saw an intimate bond between knowledge and power. The mere fact that a cognitive state is an effect of power does not exclude it from the realm of knowledge.