Since its inception, sexuality has been regarded as a key concept in psychoanalysis and remains of central importance to any therapeutic relationship. Building on Freud's three essays, Quindeau presents the foundations of psychoanalytic sexual theory and discusses the following questions: How does pleasure enter the body, and what do we understand today by male and female sexuality? Is the distinction between heterosexuality and homosexuality even meaningful? How can sexuality be discussed in therapy, and how can sexual disorders be understood and treated? The book provides foundational knowledge and invites readers to question their own views and to refine them in engagement with the body of psychoanalytic theory.