08May. ’20 What is Usury? In Thomistic terms usury is defined as the double sale of an object that is consumed in its use. Belloc explains it in practical terms. Share this:TwitterFacebookLike this:Like Loading... Related Posted by George of Lydda. Categories: Uncategorized. Tags: Aristotle, Catholic doctrine, Catholic Social Doctrine, Hilaire Belloc, St. Thomas Aquinas, Usury. Leave a comment