Book excerpt: Marshall Edelson identifies the core theory of psychoanalysis and shows how free association and the case study method can provide rational grounds for believing its clinical inferences about the causal role of unconscious sexual fantasies. "Dr. Edelson has committed himself with gusto, persistence and intelligence [to] a spirited defense of psychoanalysis as science—not necessarily as it is, but as it can be in the best of hands as it should be. . . . It is a defense that I hope can resonate strongly in psychoanalytic ranks. It is also a message that I hope would receive a warm reception in that wider intellectual world where ideas matter and where enlightened social policy and cultural cachet are fostered."—Robert Wallerstein, New York Times Book Review