Abstract
In this paper we analyze three hypotheses about the relation between virtue and happiness in Socrates. In the first place, Irwin’s thesis (1995) that asserts an instrumental relation between virtue and happiness; second, Vlastos’ thesis (1994) that asserts a partially constitutive relation and, finally, after discussing the contradictions in those theses, we stated the identity relation thesis between virtue and happiness in Socrates. Key words: classical philosophy, ethics, Socrates, Socratism.