A great deal of time, effort and patience is needed to read this book by Merendino, although a lot less than he needed to conceive and write it. The work consists of a series of essays with a common theme running through them: how knowledge in psychoanalysis is formed and conveyed. The Author extends the semantic meaning of the term and reminds us that analytic work is essentially epistemological, i.e. it is a producer of knowledge. But the knowledge produced by the couple must first shift from the private to the public sphere through the writing of a case history and the subsequent theoretical interpretation thereof. The next step is to construct a universally acknowledged science based on the elaboration of the theoretical-clinical material produced in this way.