The article is devoted to a critical analysis of Lacan’s interpretation of Socrates’s philosophical figure. According to Lacan, in Plato’s writings Socrates plays a role similar to that of a therapist. If so, this role brings to the fore a dimension of philosophical discourse that usually stays in the background: the dimension of desire and its relations both to the subject and to the truth. If it is impossible to rule out desire and its relations from philosophical and dialogical practice, then absolutistic claims concerning the search for truth fail.