Lacan in the logic of emancipation. From the texts of Jorge Alemán. It is legitimate to say that Jorge Alemán is a psychoanalyst, a philosopher, a poet. But what is legitimate – in this as in many other cases – is insufficient. Probably what best defines him is the status of “thinker of equivalences between the non-similar”, as Horacio González maintains in his article in this volume. This, because if there is something that characterizes Alemán, it is his fruitful insistence on the need to unite, through reflection, those authors, traditions and concepts that, prior to their articulation, seemed to belong to completely antithetical registers. Evidently the most important of these unions, although clearly not the only one, is that of the Lacanian left.