At first glance, the recommendation that those interested in learning to practice psychoanalytic therapy should laboriously dedicate themselves to studying Freud has a tinge of cult of personality, an evangelical stamp, and seems to suggest that nothing else is worth studying. . Although it is true that this recommendation has been interpreted anyway, to the detriment of psychoanalysis and scholars alike, it also has another compelling justification, which has to do with the intimate nature of this science: that in its history it follows a truly rational course in around a common thread of logical necessity.