Before he became an analyst, Lacan was a psychiatrist. The articles in the present volume would not be being republished if they didn’t invite us to read them retroactively. What can they teach us about the formation of this future analyst? Lacan’s clinical approach is rooted in the uniqueness of each case, which is only ever chosen for its “singularity”. Each one must necessarily present an “original character” or be “atypical”. One might recognise from the outset an orientation towards the “one-by-one” required by the practice of psychoanalysis. The singularity of each case re-occurs at the level of the clinical details, studied with a concern for precision that extends down to the smallest detail, to the point where the observation may seem labyrinthine to the reader. Lacan will later declare his taste for “fidelity to the symptom’s formal envelope”. Three other features carry traces of the future. There is the use of the word “structure” to refer to the organisation of an entity