The Summa Contra Gentiles Reconsidered: On the Contribution of the de Trinitate of Hilary of Poitiers

THE SUMMA CONTRA GENTILES RECONSIDERED: ON THE CONTRIBUTION OF THE DE TRINITATE OF HILARY OF POITIERS JOSEPH WAWRYKOW University of Notre Dame Notre Dame, Indiana 0 NE OF THE most difficult and puzzling of Aquinas's works, the Summa contra Gentiles, has occasioned much controversy among scholars.1 Who are the gentiles against whom Thomas is writing? Is the work principally philosophical or theological in character? Why has Thomas delayed discussion of the central Christian truths of Trinity and Incarnation to the fourth and final book of the contra Gentiles? How much credence should be given to the slightly later story (that is, post-Thomas) that Thomas composed the Summa contra Gentiles for "missionary purposes" ?-these, and other such questions, have exercised the imagination of numerous students of Aquinas. In the recent literature, Mark Jordan's " The Protreptic Structure of the Summa contra Gentiles,, without doubt offers the most 1 Thomas Aquinas, Liber de Veritate Catholicae Fidei contra errores Infidelium seu 'Summa contra Geiitiles' Vols. II-III. Edited by C. Pera, P. Marc and P. Caramello (Turin: Marietti, 1961). References to the ScG list the book, chapter, and section numbers according to the Marietti edition. P. Marc in Volume I of this edition (Turin: Marietti, 1967), provides an indispensable introduction to the principal issues in the scholarship, with a strong emphasis on the problem of dating; see especially chapter I, article 3. For an English translation, see A. Pegis et al., Summa contra Gentiles, Vols. IIV (Notre Dame: University of Notre Dame Press, 1975). I would like to express my gratitude to the Institute for Scholarship in the Liberal Arts, University of Notre Dame, for a summer stipend that has supported the writing of this atricle. 617 618 JOSEPH WAWRYKOW innovative and promising approach to this controversial work.2 Jordan has raised the study of the contra Gentiles to a new level by identifying its genre through careful analysis. As his title indicates , for Jordan Thomas's Summa contra Gentiles is a protreptic work, an invitation to wisdom, to be precise, an invitation to Christian wisdom. Issued by one Christian to other Christians , the contra Gentiles in this view is a recommendation of the more serious and sustained pursuit of the Christian form of life, a recommendation that includes in its survey of the different layers of Christian wisdom the depiction of the failings of alternative , non-Christian, versions of truth.3 In the hands of Aquinas, this protreptic, moreover, itself becomes a schooling in wisdom (Jordan, p. 209) : in following Thomas in the numerous discrete arguments that constitute the contra Gentiles, the Christian reader will in fact become imbued in Christian wisdom, thus anticipating in the present life the completion of this pursuit of wisdom that will be provided in the beatific vision in the next. Jordan's is a powerful study and, on the basis of its structural observations about the contra Gentiles, both large and local, would seem in its core insight to be fundamentally correct. His recognition of the protreptic structure permits a balanced assessment of the traditional questions addressed to the contra Gentiles (for details, see the article), while highlighting the positive, Christian-theological intentions of Aquinas in composing this work. Yet, by observing two points at which his analysis flags, it will be possible to add to Jordan's genuine contribution. The first of these observations concerns Jordan's treatment of 2 Mark D. Jordan, "The Protreptic Structure of the Summa contra Gentiles," The Thomist 50 (1986) : 173-209. I have benefitted greatly from extended conversations with Professor Jordan about his work on the contra Gentiles. 3 Jordan specifies the term "protreptic" as follows (p. 192): "A protreptic was originally a persuasion to the study and practice of some art or skill; for philosophic writers, it became an exhortation to the practice of the philosophic art, which required virtues of inquiry and contemplation." Later (p. 194), Jordan indicates the ways in which Thomas has transformed ancient protreptic in offering this Christian protreptic. HILARY'S DE TRINITATE AND AQUINAS 619 Aquinas's approach to scripture in the fourth book of the Summa contra Gentiles. That the analysis of Thomas's approach here to scripture needs...