Did Freud present a scientific hypothesis about the unconscious, as he always maintained and as many of his disciples keep repeating? This question has long prompted debates concerning the legitimacy and usefulness of psychoanalysis, and it is of utmost importance to Lacanian analysts, whose main project has been to stress Freud's scientific grounding. Here Jacques Bouveresse, a noted authority on Ludwig Wittgenstein, contributes to the debate by turning to this Austrian-born philosopher and contemporary of Freud for a candid assessment of the early issues surrounding psychoanalysis....