Lacan's seminars are a treasure trove of innovative psychoanalytic explorations. In Seminar X, Anxiety, he takes up this Freudian theme and explores a number of interrelated ideas: castration, the difference between the sexes, two different forms of acting out, and what he terms his only original theoretical contribution: the object a and its “various incidences.” The object a is described here in detail, especially in relation to Lacan's argument that analysts who are women have a freer relationship to their desire and the countertransferences it spawns than do men. Lacan discussed Lucia Tower's classic paper, “Countertransference,” in light of these notions. This essay is a close reading of Lacan's close reading of Tower, whose account, he says, must be approached in all its “innocence and freshness.”