In 1947, the author founded the Library of Psychoanalysis and Clinical Psychology at Presses Universitaires de France, and forty-two volumes have appeared, by French and foreign authors, nine of them works or reprints of articles by Freud. It was here that he produced his precise and important The Language of Psychoanalysis (1968), which has been translated into many languages. The Works of Daniel Lagache English edition in one volume is a selection of those texts that are most representative of the psychoanalytic thinking of the author. It is a thinking that is rich in epistemology, ensuring that psychoanalysis is set in relationship to behaviorism and clarifies its status as an "exact science". It deserves to provoke a lively response from the English speaking public.