In Psychiatric Power , the fourth volume in the collection of his groundbreaking lectures at the Collège de France, Michel Foucault addresses and expands upon the ideas in his seminal Madness and Civilization , sketching the genealogy of psychiatry and of its characteristic form of power/knowledge. Madness and Civilization undertook the archeology of the division according to which, in Western Society, the madman found himself separated from the sane. That book ends with the medicalization of madness at the beginning of the nineteenth century. Psychiatric Power continues this discourse up to the end of the nineteenth century, and the double "depsychiatrization" of madness, now dispersed between the neurologist and the psychoanalyst. Presented in a conversational tone, Psychiatric Power brings fresh access and light to the work of one of the past century's preeminent thinkers.