In this book the author explores the particularities of the status of the method in psychoanalysis, linked to the specificity of unconscious psychic processes. If the method aims at ensuring a level of technical mastery, it must also make sure that analytic treatment does not become an 'application' of knowledge. A modern conception of the analytic situation implies going beyond the classical pair of 'setting-interpretation'. Starting out from the postulate of a transferential dynamic of the encounter, the author brings into play the pair 'analyzing site-situation'. The 'analyzing situation' emerges from the utilization, in a found-created mode (Winnicott), of an initial site constituted by a set of means put at the patients disposal. The analyzing situation includes patient and analyst in a self-organizing structure. The notion of a site makes it possible to approach the difference between psychoanalysis and analytic psychotherapy differently: each site has a 'logic', an intrinsic functional coherence, which have their own incidence on the therapeutic process.