This paper aims at putting forward the analytical stake of the few passages that Thomas Aquinas devotes to prices and exchange, mainly in the Summa Theologiae. At first sight, his objective is to enlighten a confessor vis-à-vis his penitent, or the judge in an ecclesiastical tribunal, by way of...

The monetary theories that stem from the works of Thomas Aquinas on the one hand, John Buridan and Nicholas Oresme on the other hand, share common roots: they appear as the result of careful commentaries upon Aristotle's moral and political works. Nonetheless, they differ on both the...