Articles and books on Aquinas’ idea of virtue and of specific virtues constitute a library, this is without counting the numerable articles and books on “virtue ethics” since Philippa Foot’s seminal text. Most of this literature focuses on the agent, the acts, their motivations and justifications. In the course of this seminar, we will explore the relation between virtues and human acts in so far as they are related to specific regimes of social interactions. Which regimes seem to constitute the locus of which virtues treated by Aquinas? Why these? Could virtues be integrated in other regimes (see Boltanski’s “cities”)? With these questions, this seminar hopes to open new research avenues within thomist circles and to bring Aquinas’ options to enter in conversation with other approaches to human action.