An analysis is a dialectic experience. This word has an old and prestigious philosophical connotation. But the author uses it in the sense of modern materialists, emphasizing that etymologically it signifies 'dialogue'. From the beginning the dialogue aims at showing the incongruences of the opponent as much as the elucidation of truth. This dialectic experience takes place between subjects with one subject confronting his own subjectivity against that of another. This is what gives psychoanalysis its human dimension.