Abstract

In his discussion of how future contingents are known and revealed Thomas systematized what Augustine had developed in his disputes with the Stoics and Pelagians. Thomas shows how logical determinism concerning future contingents is avoided by Aristotelian logic, according to which future contingents have no determinate truth. Moreover, he explicitly unravels how our understanding of causal contingency and necessity is applicable only to created causes. Nevertheless, Augustine had explicitly done the same when he criticized the Stoics not for their position that every event is ordered, but rather for not recognizing that this order must include God’s causal power. Moreover, Augustine’s discussion of God’s promise to Abraham stresses that only God can move the will without taking away its freedom. The truth of the promise is based on the truth of what God will do. Similarly, Thomas stresses that knowledge of future contingents can only be prophetic, since they are present only in God and have determinate truth only on account of his decision to cause them. Augustine did not go into detail concerning how future truths are usually known insofar as they are present in their causes, but Thomas’ position is compatible with that of Augustine and may go some way towards explaining its deeper philosophical implications. The similarity of Thomas and Augustine on the problem of prophecy and foreknowledge is an instance of how Thomas often agrees with Augustine on substance, even though he expresses his view in a more systematic and precise fashion. The most relevant texts of Augustine on this issue are polemical. There is even development in Augustine, as he moves from his relatively simple concerns about necessity in the De libero arbitrio to the more sophisticated treatments in the Ad Simplicianum, the De civitate dei and the anti-Pelagian writings. Thomas’ texts are scholastic. Consequently, he is able to discuss one topic at length and to use conceptual resources borrowed or developed from Aristotle. Nevertheless, there is no reason to conclude that Thomas’ development of these themes betrays Augustine any more than Augustine’s own development betrays his earlier writings. On this issue Thomas is truly Augustinian.