“Whoever is interested in the material interweaving of concepts as well as in their slow metamorphosis from an uncertain thing – a source of misunderstandings, approximations and clumsy identifications – to a structuring concept of the human and social sciences will find in William Pietz's book not only a rigorously documented history of the term, but also, on the heuristic level, a basis for pursuing the many paths made available to our disciplines attached to the knowledge of the human being in society.”