The Logic of the Trinity: Augustine to Ockham

In the divinity, for example, substance cannot be defined as a substrate for accidents, since in God there are no accidents, but substance must be defined as not being in any subject. Since the category of relation plays a prominent role in subsequent Trinitarian theology, Thom gives a detailed analysis of relations dividing them into de, in, ab, and ad. Any scholar wishing to do a study with a possible view to future publication regarding any of the selected ten authors would do well to study carefully the treatment and evaluation accorded them by Paul Thom.-Girard J. Etzkorn, Franciscan Institute, Bonaventure University.