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216. Thomas Aquinas, the Evangelical?

Thomas Aquinas (1225-1274) is the Roman Catholic theologian par excellence. For centuries he has embodied the letter and the spirit of the theology of the church of Rome. Combining rationality and contemplation, rigor and passion, study and devotion, his thought has touched on the different traits of Catholic life inspiring the intellectual sophistications and the popular beliefs, the academic pursuits, and the devotional imaginations. The reception of his legacy has not been without conflicts of interpretation and different seasons of greater or lesser influence. Yet, the Wirkungsgeschichte (history of effects) indicates that there would not have been the anti-Protestant Roman Catholicism of the Council of Trent (1545-1563), the anti-modernist Roman Catholicism of Vatican I (1870), and then the ecumenical Roman Catholicism of Vatican II (1962-1965) without Thomas Aquinas inspiring them all in different ways. Difficult to dispute is church historian David Schaff’s claim that “the theology of the Angelic Doctor (Thomas’s nickname in Catholic circles) and the theology of the Roman Catholic Church are identical in all particulars except the immaculate conception. Anyone who understands Thomas understands medieval theology at its peak and has access to the doctrinal system of the Roman Church.”[1] At least symbolically if not theologically, Thomas is to Roman Catholicism in all its internal versions what Luther and Calvin are to the Reformation in all its variants: father-like figures.

By contrast, until a few years ago, precisely because of his close identification with Roman Catholicism, few would have dreamed of seeing Thomas associated with a “Protestant” sensibility. It is true that, in Thomistic studies, there is a vein that interpreted Thomas from the point of view of him being associated with evangelical traits. For example, M.-D. Chenu refers to this view when he claims that “the evangelical vocation of brother Thomas Aquinas is at the origin of his theology.”[2] Certainly, the reference to the “evangelical” must be interpreted here in a very broad sense that is vaguely inspired by the Gospel in a form compatible with traditional Roman Catholic doctrine and experience.

In recent decades and with increasing intensification, Thomas has instead been brought closer to a Protestant theological sensibility. In the German and Lutheran context, in 1964, Ulrich Kühn wondered whether Thomas belonged only to the Roman church as the apex of the medieval synthesis or whether an “Evangelical Thomas or at least a Thomas who has important things to say to evangelical theology”[3] was in need to be discovered. In the Anglo-Saxon circles, in 1985, a book critically scrutinized the perceived distrust of contemporary evangelical thought (for example: Cornelius Van Til and Francis Schaeffer) towards Thomas and considered it more of a reaction towards 19th century Neo-thomist images of Thomas than on Aquinas himself.[4] Then there were those who worked hard to provide a very positive “evangelical” evaluation of Thomas in an attempt to rehabilitate above all his metaphysics and epistemology in their apologetical endeavors.[5] In an unassuming little article, but which opened a crack that later became a gash, a respected North American evangelical theologian peremptorily entitled his essay: “Thomas Aquinas was a Protestant.”[6] According to the article’s daring thesis, Thomas’s theology was close, not to say overlapping, to the “formal principle” of the Protestant Reformation (Scripture Alone) and its “material principle” (Faith Alone), making him a forerunner of the Reformation, also with regard to the doctrine of justification. In more recent years, academic circles influenced by the theology of Karl Barth have also begun an operation of re-appropriation of Thomas in the form of theological ecumenism and referred to as “Protestant Thomism” or “Thomistic Protestantism.”[7] Similar phenomena can be found in the works stemming from “radical orthodoxy.”[8]

In fact, there seems to be a widespread perception today that Thomas is no longer a heritage for Roman Catholics alone[9] and that Evangelicals can and should learn a great deal from Thomas.[10] On the Roman Catholic side, there are even those who have gone so far as to argue that the Roman Catholic Thomas Aquinas is both Protestant and Evangelical:[11] the real Doctor communis! If even a theologian as critical of Thomas as Scott Oliphint answers, “perhaps”,[12] when asked if Thomas would have joined the Reformation had he lived 250 later, then we must understand that it is not far-fetched theologically to ask if Thomas could indeed be considered an evangelical.

In light of this changing scenario, today, the most serious evangelical research on Thomas Aquinas looks in a series of directions:[13]

– on the use of Thomas that the Magisterial Reformers made of Thomas—above all reformed and Lutheran scholasticism. While Luther’s contemptuous judgment of Thomas is known (“Thomas est loquacissimus quia metaphysica est seductus,” “Thomas is very loquacious because he is seduced by metaphysics”),[14] the subsequent interpretations in the Lutheran and Reformed traditions are less trenchant, sometimes sympathetic.[15]

– on the sustainability of a kind of anti-Thomas prejudice of certain contemporary evangelical thought which seems more committed to combating the deviant rigidities of neo-Thomism than to understanding Thomas himself in his complexity.

– on the theological gain that evangelical research would receive from the re-evaluation of the legacy of Thomas to counter certain traits of Fundamentalism (which has an unresolved view of “tradition”) and the temptations of incipient neo-liberalism (which is attracted to what is modern for the sake of being accepted by the mainstream culture).[16]

In our current cultural climate, the reference to the metaphysics of Thomas, capable of keeping Plato, Aristotle, and the Bible together—in short, the entire pre-modern Western tradition—produces an anxiolytic effect in some sectors of evangelical theology. Thomas functions as a primary symbol of the “great tradition” that unites Christian antiquity and modernity. In a world that is skeptical and suspicious of any meta-narrative, Thomas’s metaphysics and epistemology exerts some apologetic appeal, claiming to harmoniously combine faith and reason and to challenge skepticism in the name of the reasonableness of faith.[17] In the ruined landscape of present-day culture, Thomas Aquinas looks like an impressive cathedral that reassures, comforts, and inspires.

To balance this evangelical romance with Thomas, something more needs to be said in view of refining a theologically robust evangelical reading of his thought:

– Thomas has been fully and convincingly appropriated by Roman Catholic theology for centuries. One cannot naively assume that he is “Protestant” unless one acknowledges the persistent unfoundedness of all Roman Catholic interpretations of Thomas for the last 750 years.

– Thomas is the acknowledged authority behind many of the non-biblical developments in medieval and modern Roman Catholicism, from Trent to Vatican I and Vatican II. One cannot fail to see the distorting elements which are present at the heart of his system, and which have generated several departures from the biblical faith, e.g., in the areas of Catholic soteriology, ecclesiology, sacramentology, and devotions.

– Thomas laid the foundations for the theological framework, which is typical of Roman Catholicism as a system, i.e., the nature-grace interdependence,[18] which is highly problematic from the biblical point of view. Evangelical theology must be aware (and biblically proud) of operating not with a purely ontological scheme mainly deduced from philosophical categories as Thomas does, but with the historical-redemptive motif of the Bible: Creation/Sin/Redemption. Here the difference is critical.

Finally, the following elements garnered from the wisdom of the best evangelical theology throughout history should not be forgotten:

– the best Protestant theologians have read and studied Thomas, since he was the main exponent of medieval theology. They did not have reverential fears nor inferiority complexes. Rather, they faced him head-on with an attitude inspired by evangelical boldness and the biblical principle “omnia probate, quod bonum est tenete,” “Test all things; hold fast to that which is good” (1 Thessalonians 5:21).

– Protestant theologians at their best (from Peter Martyr Vermigli to Herman Bavinck, through Francis Turrettin) have generally exercised theological discernment which has allowed them to appreciate aspects of Thomas’s theology that were in line with biblical faith and to reject his teaching where it conflicted with Scripture. In other words, they did not embrace the Thomist system as such—even his metaphysics and epistemology as integrated components of it—but broke it down into its parts as far as possible with integrity and used it “eclectically.”[19] They did not reject him as a hopelessly compromised theologian (the anti-Thomas temptation), nor elevate him as the chief parameter of Christian orthodoxy (the Roman Catholic temptation), but treated Thomas as an unavoidable conversation partner in the history of Christian thought to be read critically and generously in light of the Scripture Alone principle that the Protestant Reformation recovered for the whole church. This approach is not original but seems to be the historic and best evangelical approach to Thomas Aquinas.

N.B. This article touches on issues that will be extensively dealt with in my forthcoming book Engaging with Thomas Aquinas which will be published by IVP (UK) in 2024.

[1] Quoted by his father P. Schaff, History of the Christian Church (1907) (repr. Grand Rapids, MI: Eerdmans, 1960, vol. V) p. 662.

[2] M.-D. Chenu, Aquinas and His Role in Theology (1959) (Collegeville, MN: Liturgical Press, 2002) p. 11.

[3] U. Kühn, Via Caritatis. Theologie des Gesetzes bei Thomas von Aquin (Berlin: Ev. Verlagsanstalt, 1964) p. 14.

[4] A. Vos, Aquinas, Calvin, and Contemporary Protestant Thought: A Critique of Protestant Views on the Thought of Thomas Aquinas (Washington, DC: Christian University Press, 1985).

[5] N.L. Geisler, Thomas Aquinas, An Evangelical Appraisal (Grand Rapids, MI: Baker, 1991).

[6] J. Gerstner, “Aquinas was a Protestant”, TableTalk 18:5 (May 1994) pp. 13-15 and 52. The pushback by R.L. Reymond is worth referring too: “Dr. John H. Gerstner on Thomas Aquinas as Protestant”, Westminster Theological Journal 59 (1997) pp. 113-121.

[7] Cfr. J. Bowlin, “Contemporary Protestant Thomism” in P. Van Geest, H. Goris, C. Leget (edd.), Aquinas as Authority (Leuven: Peeters, 2002) pp. 235-251 and B.L. McCormack – T.J. White (edd.), Thomas Aquinas and Karl Barth. An Unofficial Catholic-Protestant Dialogue (Grand Rapids, MI: Eerdmans, 2013).

[8] For example: J. Milbank – C. Pickstock, Truth in Aquinas (London: Routledge, 2001).

[9] C. Trueman, “Thomas Aquinas: Not Just for Catholics Anymore”, Public Discourse (19 August 2018): https://www.thepublicdiscourse.com/2018/08/39373/ (retrieved: 2nd Jan 2023).

[10] “What Can Protestants Learn from Thomas Aquinas?”, Credo Magazine 12/2 (2022)

https://credomag.com/magazine_issue/what-can-protestants-learn-from-thomas-aquinas/ (retrieved: 2nd Jan 2023).

[11] F.J. Beckwith, Never Doubt Thomas. The Catholic Aquinas as Evangelical and Protestant (Waco, TX: Baylor University Press, 2019).

[12] K.S. Oliphint, Thomas Aquinas (Phillipsburg, NJ: Presbyterian & Reformed, 2017) p. 123.

[13] An important starting point for this discussion is M. Svensson – D. VanDrunen (edd.), Aquinas among the Protestants (Oxford: Wiley Blackwell, 2018).

[14] Tischreden 3, n. 3722.

[15] Cfr. D. Luy, “Sixteenth-Century Reception of Aquinas by Luther and Lutheran Reformers” and D. Systma, “Sixteenth-Century Reformed Reception of Aquinas” in M. Levering – M. Plested (edd.), The Oxford Handbook of the Reception of Aquinas (Oxford: Oxford University Press, 2021) pp. 104-120 and 121-143 respectively.

[16] As it is done by C. Carter, Contemplating God with the Great Tradition. Recovering Classical Trinitarian Theism (Grand Rapids, MI: Baker, 2021).

[17] As it is the case with the “classical” approach to apologetics championed by R.C. Sproul, J. Gestner, A. Lindsey, Classical Apologetics. A Rational Defense of the Christian Faith and a Critique of Presuppositionalist Apologetics (Grand Rapids, MI: Zondervan, 1984).

[18] For a brief presentation and pointed critique, see G.R. Allison, Roman Catholic Theology and Practice (Wheaton, IL: Crossway, 2014) pp. 46-55.

[19] C. Brock – N. Gray Sutanto, “Herman Bavinck’s Reformed eclecticism: On catholicity, consciousness and theological epistemology”, Scottish Journal of Theology 70/3 (2017) pp. 310-332.

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207. “Go to Thomas!” Who Will Follow the Pope’s Invitation?

Nothing could be more explicit: “Go to Thomas!” This warm invitation was issued by Pope Francis to participants of the International Thomistic Congress (Sept. 21-24) during an audience at the Vatican. In his address, the pope extolled the thought of Thomas Aquinas (1225-1274) as a sure guide for Roman Catholic faith and a fruitful relationship with culture. Citing Paul VI (Lumen ecclesiae, 1974) John Paul II (Fides et ratio, 1998), who had magnified the importance of Thomas’ thought for the contemporary Roman church, Francis stood in the wake of recent popes in emphasizing superlative appreciation for the figure of Thomas while adding his own.

This is nothing new. For centuries, Roman Catholicism has regarded Thomas Aquinas as its champion. His voice is often considered the highest, deepest, and most complete of Roman Catholic thought and belief. Canonized by John XXII as early as 1323, he was proclaimed a doctor of the church by Pius V in 1567 to be the premier Roman Catholic theologian whose thinking would defeat the Protestant Reformation. During the Council of Trent, the Summa theologica was symbolically placed next to the Bible as a testament to its primary importance in formulating the Tridentine decrees and canons against justification by faith alone and other Protestant doctrines. In the seventeenth century, he was considered the defender of the Roman Catholic theological system by Robert Bellarmine (1542-1621), the greatest anti-Protestant controversialist who influenced many generations of Catholic apologists over the centuries. In 1879 Pope Leo XIII issued the encyclical Aeterni Patris in which he pointed to Thomas as the highest expression of philosophical and theological science. The Second Vatican Council (1962-1965) stipulated that the formation of priests should have Thomas as the supreme guide in their studies: “The students should learn to penetrate them (i.e. the mysteries of salvation) more deeply with the help of speculation, under the guidance of St. Thomas, and to perceive their interconnections” (Optatam Totius [1965] n. 17). Of recent popes, this has already been mentioned. Considering this, what could Pope Francis say but, “Go to Thomas!”

Francis indicated not only the need to study Thomas, but also to “contemplate” the Master before approaching his thought. Thus, to the cognitive and intellectual dimension, he added a mystical one. In this way, he caused Thomas, already a theologian imbued with wisdom and asceticism, to be seen as even more Roman Catholic. This mix best represents the interweaving of the intellectual and contemplative traditions proper to Roman Catholicism.

The International Congress had the exploration of the resources of Thomist thought in today’s context as its theme. Thomism is not just a medieval stream of thought, but a system that is both solid and elastic at the same time. All seasons of Roman Catholicism have found it inspiring for the diverse challenges facing the Church of Rome, including the Reformation first, the Enlightenment project second, and now post-modernity. As a result of the Congress, we will continue to hear more about Thomas and Thomism, not only in historical theology and philosophy, but also in other fields of knowledge that were once far from previous interpretative traditions of Thomas.

In recent years, we have witnessed a growing fascination with Thomas Aquinas and Thomism by evangelical theologians, especially coming from the North American context. They seem to be attracted to the “great tradition” he represents. This phenomenon should be studied because it signals the existence of internal movements within evangelical theological circles. Protestant theology of the 16th and 17th centuries had a critical view of Thomas. In a sense, Thomas could not be avoided, given his stature and importance for theology, but he was read with selective and theologically adult eyes. Then, for various reasons, there has been a certain neglect not only of Thomas but with pre-Reformation historical theology as a whole. Today, in the face of the pressures coming from secularization and the identity crisis felt in some evangelical quarters, Thomas is perceived as a bulwark of “traditional” theology that needs to be urgently recovered. It is often overlooked that Roman Catholicism has considered Thomas as its champion in its anti-Reformation stance and also in its subsequent anti-biblical developments, such as the 1950 Marian dogma of the bodily ascension of Mary. Rome considers Thomas as the quintessentially Roman Catholic theologian and thinker.

“Go to Thomas!” is an invitation that even a growing number of practitioners of evangelical theology would take up. The point is not to uncritically study or absolutely avoid Thomas, but rather to provide the theological map with which one approaches him. It is necessary to develop an evangelical map of Thomas Aquinas. If Rome considers Thomas its chief architect, can evangelical theology approach him without understanding that Thomas stands behind everything Roman Catholicism believes and practices?  

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201. “Gratia Supponit Naturam”? A Historical Sketch of the Nature-Grace Interdependence (Part I)

The 1992 Catechism of the Catholic Church begins with a section interestingly entitled “Man’s Capacity for God” and deals with the foundational issue of whether or not men and women are naturally open to God and recipients of His grace. The answer of the Catechism is “yes,” and this affirmative answer is the backdrop of the Roman Catholic way of relating nature and grace. Indeed, one of the axes of the Roman Catholic system is the “nature-grace interdependence.” Briefly put, here is a way to introduce it:
 
“[T]he spheres of nature and grace are in irreversible theological continuity, as ‘nature’ in Roman Catholicism incorporates both creation and sin, in contrast to the Reformed distinction between creation, sin, and redemption. This differing understanding of sin’s impact means grace finds in nature a receptive attitude (enabling Roman Catholicism’s humanistic optimism), as against a biblical doctrine whereby entrenched sin leaves us unaware of our reprobate state. Nature is seen as ‘open’ to grace. Although nature has been touched by sin, it is still programmatically open to be infused, elevated, supplemented by grace. The Roman Catholic “mild” view of the Fall and of sin makes it possible for Rome to hold a view of nature that is tainted by sin but not depraved, obscured but not blinded, wounded but not alienated, morally disordered but not spiritually dead, inclined to evil but still holding on to what is true, good and beautiful. There is always a residual good in nature that grace can and must work with. After Vatican II, more recent interpretations of the nature-grace interdependence go as far as arguing that nature is always graced from within. If traditional Roman Catholicism maintained that grace was added to nature, present-day Rome prefers to talk about grace as being an infrastructure of nature. In spite of the differences between the two versions, the interdependence is nonetheless underlined.”[1]
 
This brief description highlights the fact that Rome has historically built its theological system along the lines provided by the nature-grace interdependence. It is therefore useful to better grasp the historical trajectory of the Roman appropriation and elaboration of that relationship. An old but still significant article by Johannes Beumer (1901-1989), a Jesuit theologian at the Gregorian University of Rome, covers much ground in sketching such a history up to the first half of the 20th century[2] and can be the starting point for some further comments and evaluations.
 
“Gratia supponit naturam” (grace supposes nature) is the traditional expression that encapsulates the nature-grace interdependence as it is envisioned by Roman Catholic theology. It conveys the idea that man is capable of receiving grace as a natural desire and disposition. As nature is open to grace, so grace is in continuity with nature. The two are distinct but intertwined.
 
Where does this understanding come from? From the patristic age, there are several interwoven threads, but the contours of the motif are still loose and undefined. Both in the West (e.g. Ireneaus and Athanasius) and in the East (e.g. Gregory of Nazianzus and Basil the Great), there is a talk of grace “perfecting” nature as well as the recognition of the pervasive consequences of sin which have marred that disposition of nature to be elevated by grace. These two elements somehow co-exist. While the Fathers contain some ambiguities in this respect, their main focus is to underline the power of grace to perfect the Christian life, i.e. the life of someone who has already received God’s grace, not natural life per se. Theirs is not an abstract reference to nature as such but to the kind of nature that has already been touched by grace and continues to be impacted by it.
 
In the East, however, the stress is increasingly put on the participation of nature to grace as an inherent capacity that is maintained regardless of sin. In Maximus the Confessor, John of Damascus and the Pseudo-Dyonisius, there is a growing insistence that grace cannot work apart from the assumption that nature is disposed to receive grace, welcome it, and be perfected by it. In their view, there is a harmony between nature and grace. Obviously, in this theological understanding, the impact of sin recedes from the fore and becomes less relevant than in a Church father like Augustine. What is prominent is the continuity between nature and grace and their interdependence.
 
In the Medieval period, it is Albert the Great (1200-1280) who teaches that we are by nature disposed to receive grace and that grace presupposes what is natural in us. His famous sentence is “what is in nature is also in grace” (“sicut est in naturis, sic et in gratia”). In his view, grace does not distance oneself from nature nor does it modify nature; rather, grace perfects nature. Along this line, Bonaventure of Bagnoregio (1221-1274) coins the phrase “grace presupposes nature” (“gratia praesupponit naturam”). At this point, sin has disappeared from the forefront of the discussion and its impact is no longer seen as having involved a radical breach or a tragic disruption.
 
According to Beumer, Thomas Aquinas (1225-1274) is the one who has theologized the relationship more forcefully, giving it its mainstream Roman Catholic outlook in the Second Millennium. Building on what had already been envisaged by the preceding Medieval theologians, Aquinas believes that grace needs nature as its substrate, as its logical presupposition, and as the substance that could receive it. Between nature and grace there is concordance. Grace fits nature and vice versa. Sin, though formally acknowledged, is swallowed in nature and considered a weakness or a sickness of nature which nonetheless maintains its original openness to it and capacity for it.
 
It is in the subsequent development of the Thomist tradition (e.g. Bellarmine and Suarez) that one finds an account of the relationship that stresses the distinction between nature and grace, while maintaining their organic link. In Scholastic Thomism grace is seen as the added gift to nature, which can function even without grace. Grace is super-natural, placed on top of nature, as if it were an added layer. In this scholastic view, nature can exist without grace but grace cannot exist without or apart from nature. One consequence of this Thomist account is that the difference between “natura pura” (pure nature) and “natura lapsa” (fallen nature) is even more blurred than in previous versions of the relationship. Sin is always formally acknowledged, but its effects are considered as not having entailed the breaking of a covenant and therefore having brought about spiritual death. Nature is still intact as it has always been since its beginning. Grace is supernaturally added to a nature that has never lost its openness to it. The addition is aimed at elevating nature to a supernatural end, i.e. a higher and superior status. Only secondarily and incidentally, grace deals with the problem of sin. The latter is a kind of road accident that has not stopped the elevation journey; it has only made it more difficult. Ultimately, there is no tension between nature and grace, but harmony and coordination.
 
Beumer’s historical sketch ends here, but the Roman Catholic development of the “nature-grace interdependence” does not stop there. The 20th century saw a significant theological debate over the exact interpretation of the Thomistic understanding of the relationship.
 
Before entering the contemporary Roman Catholic discussions on nature and grace, some provisional conclusions can be drawn from this bird’s eye view of the issue. In all its variations up to the 20th century, the “nature-grace interdependence” has shown how impactful it is on the Roman Catholic view of the (lack of) gravity of sin. Without a tragic view of sin, Roman Catholic anthropology tends to be optimistic in man’s natural possibility to cooperate with salvation, and salvation itself looks like an addition wrought by grace rather than a regenerating miracle of God who brings about life where death reigns. As the opening section of the 1992 Catechism of the Catholic Church indicates with its reference to “man’s capacity for God”, the whole theological system of Rome is shaped around it and away from the gospel.
 
 
(to be continued) 
 

[1]L. De Chirico, Same Words, Different Worlds. Do Roman Catholics and Evangelicals Believe the Same Gospel? (London: IVP, 2021) p. 105.

[2]Johannes Beumer, “Gratia supponit naturam. Zur Geschichte eines theologischen Prinzips,” Gregorianum 20(1939) pp. 381-406, 535-552. I had access also to the Italian translation provided by Simone Billeci, Gratia supponit naturam. Storia di un principio teologico (Venezia: Marcianum Press, 2020).

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189. A Biography of Thomas Aquinas’ Summa Theologiae. Is It Also A Radiography of Roman Catholicism?

Like it or not, “there is no way to escape Thomas”. With this annotation, the Canadian historian Bernard McGinn introduces his book Thomas Aquinas’s Summa Theologiae: A Biography (Princeton, NJ: Princeton University Press, 2019). The volume is by one of today’s most acclaimed scholars of medieval Christianity and has an original cut. It is not an introduction to Aquinas, nor an essay on the Summa as such, but is instead a biography of this outstanding work. The Summa consists of one and a half million words and is divided into 2668 articles. Moreover, it has had over a thousand commentaries in history (only the Bible has received more), thus becoming a catalyst for theological and philosophical thought over the centuries.

Thomas Aquinas’s Summa Theologiae holds a unique place in Western religion and philosophy. Written between 1266 and 1273, it was conceived by Aquinas to be an instructional guide for teachers and novices and a compendium of all the approved teachings of the Catholic Church—and it was still unfinished at the time of Aquinas’s death. The Jesuit Bernard Lonergan called the Summa a “synthesis of medieval culture”.

Thomas Aquinas’ World
In the first chapter, McGinn explores the intellectual world in which Thomas Aquinas lived. He particularly emphasizes the role of scholastic theology, i.e. a teaching method and style centered on the analysis of different quaestiones (issues, questions) on the basis of the waving and screening of various auctoritates (authorities). Scholastic theology had become a coherent and teachable model of inquiry. The leader of this tradition was Peter Lombard (1096-1160) with his Sentences, a work which had become the standard textbook of theology at the medieval universities and that Thomas commented upon extensively.

The second chapter presents a succinct biography of Thomas and a quick introduction to his writings (over a hundred works attributed to him). Here, McGinn argues that the traditional association of Thomas Aquinas with Aristotelianism must be intertwined with the impact of Platonism on his thought through Boethius and Dionysius the Areopagite and, above all, Augustine. In Thomas, the easy classifications do not respond to the complexity of his philosophical and theological universe.

The Summa is a full-fledged scholastic work. Each article of which it is composed poses the question to be examined, exposes a series of arguments contrary to the position one wants to support, cites an authoritative text, argues in favor of a solution and, finally, responds in detail to possible objections. Beyond the scholastic structure of the argument, in Thomas the central point is his acceptance of the Aristotelian starting point according to which science (and therefore also theology) is “certain knowledge through causes”. The entire procedure is guided by reason, which does not reach to revealed truths (like the Trinity), but which for everything else (including the existence of God) is the instrument for knowing. Reason proceeds in a circular motion: it starts from (Aristotelian) principles, argues up to conclusions, and returns to principles with a deeper understanding of the principles themselves. Even “sacred doctrine”, for Thomas, works in a similar manner. It is clear that, at the bottom of this approach, one finds the recognition of the full feasibility of human reason as a natural capacity. Although touched by sin, human reason remains the reliable instrument for all knowledge (even knowledge of God).

Exitus-Reditus, But Where is Sin?
To understand the heart of the theology of Aquinas, very enlightening pages are dedicated to the movement of the Summa based on the exitus-reditus model: all things come from God (exitus) and, in different ways, return to him (reditus). This is the macro-structure of the Summa and the grand-motif of Thomistic theology. The movement starts with God and goes back to Him as a circle.

In this Thomist view there are two basic problems, which McGinn does not discuss and which can only be briefly touched on. The first is the cyclical, rather than linear trend of its trajectory: the Bible presents a plotline not of returning to the starting point, but of arriving at a goal that is no longer the starting point. The New Jerusalem is not the initial garden of Eden; the eschaton is no longer “in the beginning”. The Omega of the story is no longer its Alpha. In the biblical plot there is a historical-redemptive progress from creation to the new creation, more than a return to the origin.

The second problem is that, in the Thomist scheme of exitus-reditus, the breaking of the covenant (and therefore the breach of sin) is missing. There is creation (going out), there is redemption (coming back), but sin is missing. Obviously Thomas has a theology of sin, but sin has no “architectural” importance. It is inside the back-and-forth movement, without a directional upheaval. For this reason, the Thomist tradition has been able to summarize its own worldview with the adage: “grace does not remove nature, but perfects it”; between nature and grace there is a distinction of order, but not a breach caused by sin. For this reason, Thomism does not have a tragic understanding of sin and its consequences. For this reason, the relationship between nature and grace in Thomistic Roman Catholicism underestimates the effects of sin and has an optimistic view of human capacities in cooperating with salvation. The grace of reditus corresponds to the nature of the exitus, but what about sin? In the context of this overall optimism, the Roman Church has built its inflated self-understanding and its sacramental mediation.

In light of these remarks, it is perhaps clearer why the new wine of the Protestant motif of “creation-fall-redemption” cannot fit in the old skin of Thomism of the exitus-reditus motif. Sin entered the world and altered it to the point that redemption is not an elevation of nature nor an addition to it, but can be biblically explained in terms of regeneration, life out of death, light out of darkness, salvation out of reprobation. Therefore, one can begin to perceive why the difference between Thomism and the evangelical faith touches on a crucial, structural, foundational point, even in the presence of terms and themes that are sometimes overlapping.

The Summa at the Core of the Roman Catholic System
The second part of the book is dedicated to the biography of the Summa across the centuries, from the first wave of Thomism immediately following Thomas’s death up to the neo-Thomism of the 19th-20th century. McGinn remembers in particular Tommaso de Vio, Cardinal Gaetano, at the turn of the fifteenth and sixteenth centuries, who clashed with Luther. It is well known that the German Reformer had an unquestionably negative understanding of Thomism. For him, Thomas was “the source and foundation of all heresy, all error and the obliteration of the Gospel”. It is also interesting that at the Council of Trent a copy of the Summa was placed next to the Bible, symbolically signifying the elevation of Thomas’s work to a source of authority for the Roman Church. No wonder Thomas was recognized as a “doctor of the church” by Pope Pius V in 1567. From that point on, Thomas became an immovable cornerstone of Roman Catholic theology. On the basis of the Summa, the Jesuit Robert Bellarmine would have built his anti-Protestant apologetics that became standard up to the first half of the 20th century. Neo-Thomism found in Leo XIII a pope who wrote the encyclical Aeterni Patris (1879), in which he officially elevated the thought of Thomas Aquinas to be the normative theological system for Roman Catholicism.

McGinn recalls the controversies over the “modernists” who were not so much opposed to Thomas as to a “triumphalistic” or “authoritarian” form of Thomism. In the twentieth century, McGinn identifies four strands of Thomism still existing in the Roman Church:

  • “Strict-Observance Thomism” (in the wake of Aeterni Patris: R. Garrigou-Lagrange, the “sacred monster of Thomism”);
  • “Recovered Thomism” (M.-D. Chenu, Y. Congar, H. de Lubac);
  • “Metaphysical Thomism” (J. Maritain, E. Gilson);
  • “Transcendental Thomism” (P. Rousselot; J. Maréchal, K. Rahner).

Although Thomism is a legacy that is variously assimilated and understood, its permanent and pervasive influence on Roman Catholicism is undeniable. McGinn refers to the fact that Aquinas is cited in the texts of the Second Vatican Council (1962-1965) 734 times (the second most cited father is Augustine with 522 citations) and is cited in the Catechism of the Catholic Church (1994) 61 times. Moreover, according to Thomas G. Guarino in The Disputed Teachings of Vatican II: Continuity and Reversal in Catholic Doctrine (Grand Rapids, MI: Eerdmans, 2018), the real theological mind behind Vatican II is not a modern theologian but Thomas Aquinas himself. It was Aquinas who “furnished the writers of the dogmatic texts of Vatican II with the bases and structure (les assises et la structure) of their thought; again, “while Thomistic language was absent at Vatican II, Thomist ideas were in plain sight”. A modernized form of Thomism, perhaps away from the rigidity of 19th century Neo-Thomism, but always within the same tradition expanded in dialogue with the modern world, was and is the framework that provides “the bases and the structure” of Rome. Furthermore, John Paul II’s encyclical Fides et Ratio (1998) is a quintessentially Thomist reflection on the relationship between faith and reason.

Although no longer monumental (perhaps) and certainly not monolithic, Thomism is still “substantial” for Roman Catholicism, representing its main theological backbone. Giving the Summa a central place in the work of Thomas Aquinas and coming to terms with its “biography” allows us to access the radiography of what lies at the heart of Roman Catholicism then and now. When we deal with the Summa and its impact across Church history we should be aware of the fact that we are not dealing with a generic work belonging to the “Great Tradition” which is common to all strands of Christianity. We are dealing with a specific account of it that Roman Catholicism consistently calls its own.