Abstract
In Opus imperfectum, Augustine’s last controversy against Julian of Eclanum, we can recognize these two theologians’ rhetorical devices in which they tried to condemn each other as heretics. Particularly in the interpretations of both polemists on the issue of human sexual desire, Augustine and Julian fiercely confronted each other, making extensive use of a variety of rhetorical measures. In this article, referring to important recent research while at the same time focusing on crucial primary texts, I first would like to clarify these rhetorical arguments, particularly, the supremacy of Augustine in using such rhetorical devices. Next, the quite different philosophical frameworks of both polemists are clarified. In addition, the political and ecclesiastical perspectives of Augustine’s and Julian of Eclanum’s theological reasoning are investigated and the political tactics and ecclesiastical diplomacy of Augustine clarified. The ultimate purpose of this article is to explicate the mechanism and the true reasons for the victory of Augustine and the excommunication of Julian and other Pelagians.