Returning to Freud's meaning does not mean returning to Descartes. The cogito is a bad dream, the psychoanalytic experience, an exploration that brings to our perception the narcissistic wound that Freud calls. Why does the speaking being, who inhabits language, speak from the "cosmological humiliation" imposed on it by the Copernican inversion of a narcissistic illusion, see the hope of a new unity being born? No longer being the master of the world - with how much complacency he pretends to accept it! - the speaking being wakes up from a nightmare, and the cogito is nothing more than an attempt to fill the primordial lack of the subject, an attempt called psychology. "The ego is no longer the master in its own house," cries Freud, emphasizing that the first humiliation is succeeded by the great "psychological wound." [...]

(from the translator's introductory note)