The book unfolds incredible erudition, a virtuoso writing and, in general, an undeniable brilliance. That said ... we can also think, at times, Foucault never say that well known by the back door of his things ... multiple readings he indulges in his writing (as they say of a musician he listens to) ... his systematic tables are artificial. In short, all this is too bright to be truly fruitful. And there would be at least two valid reason to think: all the work is built on a concept, epistemic, which is never clearly objectified, and it is a lack; secondly, the concept of an "end of the humanities" around psychoanalysis, anthropology and linguistics which closes the work is allusive (and somewhat dated ...). In the end, the conclusion is not really justified 400 dense pages, and some passages still quite obscure (who can understand what Foucault heard about the "analysis of wealth" for example). So: people who want to discover this great author of themselves, allow me to address this advice: see more on the side of Discipline and Punish and The History of Madness, which are readings which no fate disappointed.