L’esercizio psicoanalitico del dissensoThe article outlines the works and the biografy of Johannes Cremerius (1918- 2002), the co-founder with Gaetano Benedetti of A.S.P.’s Psychoanalytic Association and S.P.P.’s Psychoanalytic Psychotherapy School. This German important psychoanalist’s deep and innovative insights on clinical theory and technique are stressed, particularly pointing out his revolutionary view of transference and countertransference and his relational and two-persons psychology approach. Following preview articles and papers about Johannes Cremerius and presenting the transcription of one of his not yet published seminars, this author’s interesting portrait emerges like that of an unique Freud’s lover as well as dissident. His main concepts are discussed here: unconscious and real components of the patient/analyst relation, the therapeutic change, the psychoanalytic training and its actual failure, the relationship between psychoanalysis and contemporary society, the role of the analyst’s neutrality and presence in the therapeutic process. The verbatim transcription of an unpublished workshop led by Johannes Cremerius follows.