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Compendium of Theology

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Towards the end of his life, St. Thomas Aquinas produced a brief, non-technical work summarizing some of the main points of his massive Summa Theologiae . This 'compendium' was intended as an introductory handbook for students and scholars who might not have access to the larger work. It remains the best concise introduction to Aquinas's thought. Furthermore, it is extremely interesting to scholars because it represents Aquinas's last word on these topics. Aquinas does not break new ground or re-think earlier positions but often states them more directly and with greater precision than can be found elsewhere. There is only one available English translation of the Compendium (published as 'Aquinas's Shorter Saint Thomas's Own Concise Version of his Summa Theologiae,' by Sophia Institute Press). It is published by a very small Catholic publishing house, is marketed to the devotional readership, contains no scholarly apparatus. Richard Regan is a highly respected Aquinas
translator, who here relies on the definitive Leonine edition of the Latin text. His work will be received as the premier English version of this important text.

250 pages, Paperback

First published January 1, 1273

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Thomas Aquinas

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Philosophy of Saint Thomas Aquinas, a Dominican friar and theologian of Italy and the most influential thinker of the medieval period, combined doctrine of Aristotle and elements of Neoplatonism, a system that Plotinus and his successors developed and based on that of Plato, within a context of Christian thought; his works include the Summa contra gentiles (1259-1264) and the Summa theologiae or theologica (1266-1273).

Saint Albertus Magnus taught Saint Thomas Aquinas.

People ably note this priest, sometimes styled of Aquin or Aquino, as a scholastic. The Roman Catholic tradition honors him as a "doctor of the Church."

Aquinas lived at a critical juncture of western culture when the arrival of the Aristotelian corpus in Latin translation reopened the question of the relation between faith and reason, calling into question the modus vivendi that obtained for centuries. This crisis flared just as people founded universities. Thomas after early studies at Montecassino moved to the University of Naples, where he met members of the new Dominican order. At Naples too, Thomas first extended contact with the new learning. He joined the Dominican order and then went north to study with Albertus Magnus, author of a paraphrase of the Aristotelian corpus. Thomas completed his studies at the University of Paris, formed out the monastic schools on the left bank and the cathedral school at Notre Dame. In two stints as a regent master, Thomas defended the mendicant orders and of greater historical importance countered both the interpretations of Averroës of Aristotle and the Franciscan tendency to reject Greek philosophy. The result, a new modus vivendi between faith and philosophy, survived until the rise of the new physics. The Catholic Church over the centuries regularly and consistently reaffirmed the central importance of work of Thomas for understanding its teachings concerning the Christian revelation, and his close textual commentaries on Aristotle represent a cultural resource, now receiving increased recognition.

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Displaying 1 - 30 of 62 reviews
65 reviews7 followers
February 15, 2018
Even as a Reformed Protestant, most of this was fantastic. Aquinas is grossly under read in the modern Reformed church.
Profile Image for Micaela.
202 reviews61 followers
February 10, 2016
I read this as part of a project to familiarize myself with some of the fundamental works of medieval literature and scholarship. I was not disappointed. While the unabridged Summa is rather daunting unless you know precisely which chapters to seek out, this Shorter Summa is eminently approachable, both as a student of history, and, I think, as a student of theology or ordinary Christian. I actually use my notes from this work as a short-form guide to the unabridged Summa, reminding me where to look for various topics.

Aquinas' work is monumental and yet to be surpassed, because it came at the culmination of scholasticism and before the Papal schism and Protestant reformation that tore the Church apart and shaped the thoughts of later theologians. While in late life, St. Thomas is said to have in some way rejected his own scholarly approach to his faith in favor of some true experience of the divine (Martin Luther would have been thrilled), the work still stands as one of the best expositions of Catholic doctrine for anyone who wants a deeper understanding of theology.
Profile Image for Luke.
162 reviews8 followers
November 26, 2025
Whoever thought it was a good idea to change the name of this work from “Compendium Theologiae” to “Shorter Summa” was an idiot.

Devotional warmth with intellectual richness. The cutoff at the end before we get to Charity is brutal. I know your books might seem like straw to YOU, St Thomas, after your heavenly vision, but the rest of us could low key have used some finished straw.
Profile Image for Kirk Metzger.
109 reviews3 followers
March 21, 2022
Four stars so I don’t get called a papist.

“The divine good pleasure [giving us the kingdom] is efficacious to implement everything that it disposes.”
Profile Image for Erin Evans.
25 reviews4 followers
July 2, 2020
Not so much a review...more of a reflection on what this book has meant to me. I can’t help but wonder what a celibate friar, 753 years my senior, would think of holding the hand of a modern, middle-aged, married woman like me. The more I’ve gotten to “know” Aquinas, the more I think it would have blessed him to know that his ideas are still bearing lasting fruit, leading people to seek their true end in God alone. Here are just a few of the areas Aquinas’ Compendium of Theology has gotten me chewing on over the last few months:
* Optimism about the physical creation that has allowed me to celebrate being both a spiritual and a physical being.
* That evil is not as “strong” as I once thought. It cannot even exist without good. It’s parasitic. It is simply a bend, a twist, a kink in the good. That’s what makes it so believable...at its root is something good and worthwhile. Evil is the deprivation of some good, some perfection, that something ought to have.
* That I can love God with my mind. Don’t ask me why that’s surprising! Scripture tells us to love God with all our heart, soul, MIND, and strength. Aquinas sure loved God with all his mind. His logic is impeccable. He saw our intellect as playing a key role in our advance toward the beatific vision, our ultimate end, beholding God as He truly is. Knowledge is a big part of that journey for Aquinas. What a gift we’ve been given as finite beings, to have this potentially infinite intellect. I mean, it’s not really infinite, but IF we could live long enough, we would never stop learning. That makes eternity sound exciting to me. I also think of Aquinas when it says to love God with all our strength. He was a big, strong man! Before folks knew the depth and height of the thoughts he was thinking behind his quiet, rather shy and aloof exterior, he actually acquired the nickname “The Dumb Ox.” He might have well deserved the name “ox,” but his classmates could not have been further from the truth in calling him “dumb.”
* The delicate balance between my sensitive appetite and my rational appetite. We have a natural, God-given appetite for things that we take in through our body’s senses. We also have a rational appetite that operates through reason and intellect - our will, for example. It desires order, and when it’s working properly, keeps our sensitive appetites from running wild on us. Trouble is, when we overindulge our sensitive appetite, it weakens our will to the point where our will gets pinned down. We’ve created a monster that keeps us trapped in our sin. Thank God He is able to touch our will, to incline our will to love God and begin us moving in that direction again. But it is far from easy! Taming this sensuous beast is hard and sometimes heartbreaking work! It enlists the rational appetite to its service, stealing it away from God. As long as our will is submissive to God, He grants us the light of His wisdom, but as that begins to grow dark, we are turned farther and farther from the divine goodness. Only God’s Grace can bring us back. Soooo much to say on this topic!
I feel like this initial read through was just a skimming, barely touching the surface. I think there are depths to be mined here in every reading and always something to apply to real life as I learn and grow and the struggles and challenges I face change. The short chapters are a wonderful addition to a morning quiet time, giving lots to reflect on throughout the day. Obviously, some of his ideas and doctrine don’t translate perfectly from the Middle Ages to my post-modern environment and Protestant background, but I have found a kindred spirit in Aquinas and am thankful to God for bringing him across my path when He did.
Profile Image for Maria Copeland.
431 reviews16 followers
August 27, 2024
St. Thomas Aquinas sets out here to summarize his own theological work with the aim of increased accessibility, rather than to systematize all of theology (a task already set in motion by the full-length Summa). It is perhaps a theological index more than it is a systematic theology, in part because it is incomplete. Aquinas intended to teach the three Christian virtues of faith, hope, and love, and reached only faith in its entirety and a brief beginning to the section on hope before breaking off, his work cut short by his death. The structure of the work might then render its purpose primarily referential, but if it’s mostly a collection of concise entries on doctrine, it’s a strong and beautiful one, and this is consistently true for the reader on either side of the Reformation. I found Aquinas’s scholasticism much more challenging than his Catholicism; this is a deeply Aristotelian theology, excellent but difficult. It is helpful that he repeats his main concepts enough that one can mostly follow even with a limited foundation in ancient metaphysics and medieval philosophy.

Even at its most dense and detail-laden, and in its incomplete form, this book expands a discernible narrative of the functioning of things, in origin and nature and destination. Aquinas’s theology is one of order, in which all things are subject to God, the “first cause,” and ordered toward their end. The “end” for humanity is the beatific vision — the beholding of God. Our lives and loves, in the “whole of our present life” which is “a time of wayfaring,” must be properly ordered toward the will of God. We are attended in this by grace — grace that gets us from changeability to immutability, from alienation to beholding, belonging, becoming. The final few entries, in which Aquinas discusses the kingdom of God, read to me almost like a benediction, although he never intended them as the ending. The kingdom of God is attainable, he assures us, and we ought to hope for it, and it is “perfect happiness, for it contains all good in changeless abundance.” A glorious exposition of goodness, on the whole. I am glad to have spent my summer with Aquinas!
Profile Image for Sooho Lee.
224 reviews21 followers
November 29, 2017
**true rating 4.5 (I'm sure that the ratings will only go up the more times I read it)

Saint Thomas Aquinas, the Doctor Angelicus, is most known for his magisterial magnum opus: Summa Theologiae (ST). But what about Compendium of Theology (CT)? Rarely mentioned. CT is arguably the least known and least studied of Aquinas texts, which is, really, unfortunate. Sure, CT is an incomplete work, abruptly ending mid-sentence, but its condensed content and simplicity are just praiseworthy. CT was planned to be a three-part work (modeled after faith, hope, and charity) as a manual for non-academics. But Aquinas' unforeseen death quickly halted CT's progress: he barely started on part II, Hope, and did not even get to part III, Charity. Thus, an overwhelming percentage of CT is on faith, the contents of Christian doctrine. Part I can be broken down into two unequal halves: (1) Doctrine of God, §3-184, and (2) Christology, §185-246. Each can be further divided into subcategories. 

It is undeniable that the Doctor Angelicus lived and breathed during a very different cultural and intellectual environment than, say, California 2017. Aquinas' High Scholasticism might be perceived as a sore and a bore. For example, ST's prompt, initial answers, elaboration, possible objections, and counterarguments format could easily dissuade today's readers to read any further. Might I then offer CT as the ideal place to start? CT is one of Aquinas latest works, therefore one of his most mature. Plus, CT does not have ST's format. 

Caveat Lector: This is the only Aquinas text I have actually finished in its entirety. I have read here and there from ST, and it is one of my theological dreams to finish it, but that thing is seriously massive.

cf. www.sooholee.wordpress.com
Profile Image for Alan A.
148 reviews2 followers
July 14, 2025
THIS is what Neophytes ought to read if they are to approach scholasticism. This book was purposefully made for students. It's also very good at serving catechesis and spiritual contemplation about the doctrine of God, the Incarnation of Jesus Christ, and the basics of Christian religion that is systematically explained.

If anyone were to get started on St. Thomas, they should begin with this and his "On the Rationality of Faith," as well as his commentaries on the Pater Noster & Ave Maria, to really understand not just the character or author of these writings, but the fruit of Christianity.
Profile Image for cameron.
15 reviews
September 10, 2025
“But good in the highest degree is found in God, who is good essentially and the source of all goodness. And so it follows that the final perfection of human beings and their final good consists of adhering to God, as Ps. 73:8 says “ it is good for me to cling to God.”
Profile Image for Brad.
5 reviews2 followers
December 15, 2025
This was by no means a bad book I just wasn’t smart enough to grasp most of it, I’ll keep it on my shelf and revisit it in the future
Profile Image for Illiterate.
2,779 reviews56 followers
March 28, 2024
Aquinas’s summary of his Summa focuses on theological issues (Trinity, Christ, angels, etc) more than philosophical ones (action, law, virtue, etc).
Profile Image for Drew.
659 reviews13 followers
January 9, 2024
My current hypothesis is that this is to Barth’s Church Dogmatics what his Dogmatics in Outline is. Quite enjoyable.
Profile Image for Scott Meadows.
268 reviews21 followers
February 8, 2022
Excellent introduction to the theological work of Aquinas. Would be near perfect if it was not for the occasional doctrine that is too roman for my protestant tendencies to align with.

This translation is highly approachable and contains a helpful glossary of definitions in the back for those of us still learning Aristotelian terminology.


Read for Theo i and Theo ii with Dr. Matthew Barrett
Profile Image for Charles Lewis.
320 reviews12 followers
July 21, 2016
I have had this obsession with St. Thomas Aquinas. I've read many great books about him and books about his master work, the Summa Theologica. But this is the first one edition that is really helping me to understand. Rather than being a series of statements and counter statements, as the Summa is normally published, this simply states ideas. A few cautions. It's worth reading Mortimer Adler's "Aristotle for Everyone" before hand. Thomas used many of Aristotle's ideas for which he was criticized at the time for referring to pagan. (I bet they wouldn't have called that to Aristotle's face LOL). Besides, the Adler's book is very enjoyable especially, if you're like me, and had a fear of philosophical texts. As for the Summa, it's grand to read because here is one of the creates thinkers in human history explaining the nature of God. It is not an easy or breezy read. Just take your time. I'm sure I'll be rereading the Summa all my life. It's that amazing and that important.
Profile Image for Clint.
38 reviews1 follower
April 23, 2013
St. Thomas Aquinas, one of the most sanely rational of all scholars, left posterity the gift of his insight. For anyone interested in a reasonable defense of the faith, yet feels overwhelmed by the massive tome which is the SUMMA THEOLOGICA, St. Thomas provides this more concise version of his distillation of the Christian faith and Catholic doctrine.
Profile Image for Daylon Tilitzky.
35 reviews1 follower
August 3, 2023
I tried to read this a year ago, got side tracked, and now I finally finished it.
The eay the medievals thought of God is endlessly fascinating, and their committment to trying to understand God in the most minute details is something I appreciate greatly. Aquinas tests God as someone so infinite and complex that he can go on for pages about small details of who God is and what He is capable of. As this was written without our modern obsession with individualism, it is focused mostly on God and how we should relate to Him, rather then on us and our problems. I just really appreciate his approach to Theology, attempting to understand as much as possible. Quite in contrast to today, where we are quite happy to lean on our hearts and feelings.

And yet, not all is well. As much as I would love to give this 5 stars Aquinas seems to abandon all logic and rationality when discussing two topics: Mary and women.
When discussing Mary, he insists that she must have been completely sinless and was a perpetual virgin. When he then brings up the counter arguments from scripture he essentially says "yeah this sounds like it contradicts, but it doesn't. Why? Because." There is no rationale, he inserts a few Marian hymns and thinks that it's good enough, which it isn't since scripture is above tradition, but maybe I'm just too Protestant. It's okay for Mary to have had sex since sex isn't sin imcarnate, but that was the medieval view.
Aquinas also goes on something of a rant, explaining just how awful Eve is in 7 different ways, and gives a small paragraph to Adam's sin. Again, no logic, just "I hate Eve. Mary's the best, all other women are trash." I just...it wouldn't be as bad (it would still be bad) if he at least had a solid argument but its just the classic "men good, women bad. Why? Because."
Thankfully he does not discuss the matter much. It is a reminder that even the most intelligent have biases that cloud their judgement.

All in all, it's a difficult but good read. Its a bit sad that he didn't finish it, as it cuts off just as is about the get going on his second major theme.
I recommend this to anyone who enjoys theology and wants a challenging read.
5 reviews
March 16, 2025
Shorter Summa covers a wide range of topics from salvation, the Trinity, God’s existence, the purpose of man, and many other topics that remain of great interest to Catholics, Protestants, and atheists. Of course, this book is written in defense of Catholic doctrine, so if you are a Catholic reader, you’ll either learn something new about our faith or simple read arguments that reinforce beliefs you have always held. However, the importance of the authors work isn’t just meant for Catholic readers. It’s meant for readers who struggle to decipher the world around them through physical intellect alone. The author shows that divine intellectual is a justifiable philosophical framework by which someone can view the world around them. The acknowledgment of Divine Providence through divine intellect doesn’t mean you are destined for an outcome you have no control over. The opposite is true, Divine Providence is the path you are meant to follow to eternal happiness and understanding. Every philosophical or moral framework is curated with the end goal of happiness and complete understanding of the world around you. The philosophical and moral framework the author lays out is no different. True happiness can only be found in the God who created you to seek said happiness. True knowledge can only be found in God who created you to seek knowledge and who is himself infinitely all knowing. Shorter Summa offers readers a path to God that ignites both your physical intellect and divine intellect with a final award of eternal happiness, understanding, and grace.
38 reviews
April 8, 2023
Basic mathematics of God’s Catholic church
Profile Image for Todd Stockslager.
1,831 reviews32 followers
March 29, 2025
Review title: Complex brilliance

Aquinas, writing in the 13th century, is recognized as one of the greatest theologians in Christian church history. He wrote the masterpiece Summa Theologica, or "The Sum of all Theology," but, at the request of his assistant, wrote a shorter summary for the laymen. This is what we now call the Shorter Summa.

Aquinas spent the last two years of his life working on the short version. but died leaving it unfinished, his last sentence "attainment of the kingdom is possible" (p. 366) perhaps the perfect summary of a saint's life. His planned organization into the three great virtues faith, hope, and charity was cut short early in the hope section, so the bulk of the Shorter Summa is a series of 256 positive statements of faith about God, the Trinity, and Jesus Christ. They are not written as apologetics to convince the reader of the characteristics of God, the Trinity, and Jesus, but as logical statements of fact, in dry philosophical language. This may be the shorter summary, but it isn't simple. It is however powerful in its truth and precision.

Look for example at statement #24, "God's simplicity is not contradicted by the multiplicity of names applied to Him" (p. 26). Having already proven that God is eternal, infinite, perfect, existent, and simple unity (not a composite of characteristics or parts like lower creatures like humans), Aquinas writes:
Since we cannot name an object except as we understand it (for names are signs of things understood), we cannot give names to God except in terms of perfections perceived in other things that have their origin in Him. And since these perfections are multiple in such things, we must assign many names to God. If we saw His essence as it is in itself, a multiplicity of names would not be required; our idea of it would be simple, just as His essence is simple. This vision we hope for in the day of our glory; for, according to Zechariah 14:9, "In that day there shall be one Lord, and His name shall be one."

The Bible gives us many names for God, not because he is many different things but because he is perfect and so qualitatively beyond us that we can only express ourselves by describing him with a multitude of words! The Zechariah reference provided by Aquinas explains that when we see God in eternity we will understand him as that one great name and unity that he truly is.

God is not like us. He doesn't learn things or discover them through logical deduction. He knows and understands everything everywhere all at once (#8, p. 13--"His entire existence is simultaneous," outside of time), while we "understand in discursive fashion, proceeding from one truth to a knowledge of another. . . .we advance from the known to a knowledge of the unknown, or to that which previously we had not actually thought of." (p. 30). There is nothing unknown to God, or that he has not thought of.

Or that he has not created. "Since He is the first cause, as we showed above . . . God does not need matter as a prerequisite to His action. Therefore He has the power to bring things into existence from nothing or, in other words, to create." (p. 65). And He does it of his own free will (#96, p. 101); "the omnipotent God [is] not only Creator, but also Maker. For making is properly the action of an artificer who operates by his will."

And He created for a purpose (#100, p. 109). While the language and logic are tough sledding on many of these statements, Aquinas can use examples that clarify the logic. So God is both perfect and good, as it is His nature to be both: "We can use a more appropriate example to illustrate this: as it is impossible for a man not to be a man, so it is impossible for God not to be perfectly good." (#110, p. 123).

As he moved on to what he calls "Divine Providence", which is how God interacts with his creation, I read this: "the human soul cannot be subject, in its intellect or will, to any influence emanating from heavenly bodies" [which are created by God]. . . . God alone can touch the will." (#127, p. 142). So the good we see comes from God and the good we create is possible because of God. Like the multitude of colors and the variation in nature and the beauty of music it is not a mystery that God created it and loves good and beauty, the wonder for me is the why does God love those things?

Aquinas also proves that God continues to exist and govern in the world. Aquinas's God is not the deist First Mover who set the universe in motion and stood back to watch it spin. He is active in all things (#130, p. 146-147). And to answer the objection that while God may have universal knowledge He doesn't know the particulars in detail, Aquinas responds: God certainly does know "not only universals but also particulars," because he is both infinite and eternal and therefore "can know many things simultaneously." In fact He knows "not only all that is, but all that can be. . . . God actually contemplates all infinities." (p. 150). Parallel universes in quantum physics? Yeah, God knows about that.

Evil in the universe arises not from God, the perfect primary cause, but from "secondary causes," and yet serves a purpose: "If evil were completely eliminated from things, they would not be governed by Divine Providence . . . and this would be a greater defect than than the particular defects eradicated" (#142, p. 159). in fact, "the evil which arises is ordained to some good."

Man's logic and theology, even one so saintly as Aquinas, is imperfect and imperfectable, and there are some of his statements I don't agree with, specifically on purgatory. While Aquinas makes the logical argument for it within his system, purgatory is not justified by the words of Jesus or the apostles in the New Testament. On the other hand, on the topic of Christ's Incarnation (starting with #202, p. 231) Aquinas uses his logic and theology to address the errors of other thinkers on the divine and human nature of Jesus. He summarizes the truth: "Christ had a real body of the same nature as ours, a true rational soul, and, together with these, perfect deity. These three substances are united in one person, but do not combine to form one nature." (p. 241). It is, Aquinas says later, "incomprehensible and indescribable . . . an exercise of God's infinite power . . . beyond human expression" (p. 246-247).

Then on the topic of the virgin birth of Jesus and his mother Mary, Aquinas again ties himself into logical and theological knots to make the claim that Mary was not only a virgin but sinless from her birth. He does not use the term "Immaculate Conception" which has a slightly different meaning and was not adopted as Catholic orthodoxy until 1854, as footnoted by the editor. And he makes the claim that Mary remained a virgin her entire life, never having sex with her husband Joseph and not giving birth to children by him, even though the Gospels specifically mention her children as brother and sisters of Jesus, and one of the epistles is written by James the brother of Jesus! Claiming these positions as scriptural requires convoluted and conjectural readings of the references he gives, violating the language of the texts, common sense readings of the texts, and Occam's law that the simplest explanation of the texts is likely to be the best explanation. While Aquinas himself in his writing and the publisher on the cover sometimes use the term Catholic with a capital C, remember that Aquinas was writing in the 12th century so that his use of the word is in its lower case definition of catholic as "universal" as the one established form of Christianity, and not as the name of the denomination of Catholicism as one of many denominations of Christianity. It will be 300 years after Aquinas that Martin Luther protests some of these catholic (universal) doctrines and Protestantism rejects them, repositioning the Roman Catholic church as one of several Christian denominations.

Completing the faith section with the matter-of-fact statement "And this should be enough on faith" (p. 329), Aquinas moves on to the hope section sadly truncated by his death. Addressing Prayer and hope (p. 334-336) he references scripture that tells us God already knows our needs so he identifies the purposes of prayer to reflect on our shortcomings, address them to God to be "rendered fit to receive the favor," and to make us "intimate with Him, inasmuch as our soul is raised up to God, converses with Him in spiritual affection, and adores him in spirit and truth."

After reading through the sometimes complex but often brilliant Shorter Summa, the ending is too sudden, and nearly a millennium later readers will still wonder what remained in Aquinas's mind and soul that didn't make it to his pen before he attained the kingdom. This isn't easy going but it is worthy of the reader's concentration and contemplation.
Profile Image for Jordan Coy.
70 reviews1 follower
February 24, 2023
A great introduction to the thought of Thomas Aquinas. The Compendium is a summarized (and uncompleted) exposition of his Summa Theologica. Instead of the dialectical Scholastic method of the Summa, you get a small chapters written as a syllogistic argument to answer each question. Very succinct and straightforward in presenting his answers.
Thomas divides the work into three sections: Faith, Hope, and Charity. It ends, however, at Hope, which was left unfinished. Faith consists of expositions on the Trinity and the Humanity of Christ while Hope center on virtues following from the Lord's Prayer and the true happiness of the Christian.

As Thomas describes it "faith, by which you may know the truth...hope, by which your intention may be focused on the proper end... charity, by which your affection may be completely ordered." (page 18)

This is an excellent introduction to Thomas' theology and should be considered a starting point for studying Aquinas.

4/5 Great introduction and reference
Profile Image for Jacob Rush.
88 reviews6 followers
February 10, 2018
Good doctrine of God stuff. Really fascinating insights with regards to Aristotelian categories. Of course this leads to some really wonky stuff coupled with accumulated build-up of equally wonky church tradition stuff. But on the creedal stuff, good.

I should also add that he brings up some really interesting anthropological questions with regards to man soul-body stuff. For Aquinas, man attains to immaterial truth by means of the senses, because the intellect abstracts the immaterial universal form from the particular thing. I actually don't think this is wrong, but it would do the church good to really think through this biblically and theologically, not primarily Aristotelianly.
Profile Image for Deborah.
25 reviews8 followers
Currently reading
February 26, 2008
Aggghhh! Really tough stuff. Twists your brain into a pretzel, but very interesting.
Profile Image for Jenny.
138 reviews9 followers
August 3, 2011
too deep to read at once. Doubt if i ever will. Good reference book.
Profile Image for geoffrey Paugher-Storree.
27 reviews3 followers
December 11, 2025
A more sophisticated reader than I will be able to appreciate this work without subscribing to it. There’s something aesthetically pleasing about ambitious, totalizing philosophical systems. Here is one of the great system builders in the Western tradition, and it honestly felt underwhelming to me. Perhaps unfair, since I didn’t read the full Summa Theologica with its much more robust argumentation, but who has time for 3000 pages of scholastic argumentation? Maybe I have internalized too many criticisms from reading selections of Duns Scotus and William of Ockham, but this felt too easy to poke holes into. I’m not going to put my scholastic hat on and enter the arena fully, but I’ll explain the major issues I ran into while stress testing his system.

First of all, as coherent as the whole system is, it feels like he doesn’t take his conclusions seriously enough (or downplays them selectively). One major issue is the problem of analogy. Anything we ascribe to God is only a proportional descriptor, since according to Aquinas we cannot apply creaturely concepts to God accurately. God’s love, mercy, and similar predicates are human terms applied to God imperfectly. This alone puts us in very limited epistemic territory and greatly restricts the extent to which creaturely reasoning can be carried over into divine matters.

The next area of concern involves divine simplicity. This is a radical idea that is not taken seriously enough in its implications. Because all divine attributes are identical in reality, distinct descriptive predicates collapse into a single undifferentiated reality, leaving very little conceptual content for theological analysis. Aquinas admits that any distinction among the persons of the Trinity is purely relational and essentially analogical. Yet the same author then describes the Holy Spirit as performing distinct causal roles in time (such as assisting in the Incarnation) or details how different attributes interact with distinct Trinitarian persons. This creates a tension between his metaphysical reduction of distinctions and his doctrinal need to differentiate personal operations. If we take his conclusions seriously, much of the theological content becomes trivial or speculative, since we are operating outside the domain where creaturely concepts function reliably.

He is building this system between competing restraints. He is juggling Aristotle and Christian orthodoxy. Aquinas rejects rival Christologies on rational grounds that rely on distinctions he elsewhere admits cannot map directly onto God. But when orthodoxy meets the same explanatory limits, such as how Christ’s two complete natures do not divide his personhood, he appeals to mystery. It is an inconsistent application of reason that feels transparently motivated by contradictory boundaries. I think this is the major source of my annoyance, rather than just philosophical disagreement. He clearly knows these tensions, tries to defend them with heroic effort, but holds them to much less scrutiny than the heterodox ideas in his crosshairs.

Overall, Aquinas is still a titan of philosophy and played the role of a foundational builder, giving a large canvas for future thinkers to paint onto. I still tip my hat to Aquinas’ genius, but you won’t catch me visiting the full Summa anytime soon.
Profile Image for Gabriel Gioia Ávila Oliveira.
144 reviews2 followers
February 13, 2025
Espetacular esforço de organização racional da teologia cristã de uma Igreja que completava seu primeiro milênio de existência não muito antes. Partindo do começo, descrevendo o conceito de First Mover, e crescendo a partir da metafísica, Tomás de Aquino consegue de maneira extremamente habilidosa amarrar todos os fundamentos da fé cristã de seu tempo, e estabelecer o que seria o piso dogmático e teológico da Igreja Católica pelos séculos seguintes e até hoje.

Como um leigo, não quis encarar a versão completa da Summa, que teria tomado vários meses. No lugar, li essa versão concisa, compilada pelo próprio Tomás a pedido de um pupilo. Imagino que os pontos levantados sejam os mesmos, mas que na versão original sejam mais profundamente explicados e submetidos a um rigor formal da sua lógica e articulação de conceitos. Ainda assim, considero que a versão concisa foi de muito bom tamanho para o escopo do meu projeto. Fui devidamente introduzido a São Tomás e agora tenho uma boa noção de sua importância.

A experiência da leitura se iniciou perfeita, com uma argumentação que considerei excelente para a descrição da necessidade da existência de Deus. Depois, São Tomás gradualmente se move de uma articulação de conceitos filosóficos para uma apologética dos hábitos católicos de seu tempo. Inverte assim a lógica necessária para qualquer filósofo de se guiar pela razão rumo à verdade, não por uma "verdade" pré concebida através de uma racionalização sempre enviesada. Fui, portanto, gostando menos do livro conforme ele foi avançando. Mas isso não estragou a experiência, de forma alguma.

Um colosso (literalmente) da História da Filosofia, Literatura, Teologia e do Cristianismo. Leitura obrigatória pra quem se interessa por esses temas e recomendável mesmo pra quem não se interessa.
Profile Image for Ryan Watkins.
907 reviews15 followers
June 27, 2023
This book is Thomas Aquinas's own shortened version of his Summa Theologica. On several of the early topics such as the doctrine of God and God's providence Aquinas is very good, and his views would be in alignment with confessional Protestants like myself. The chapters on angles draw heavily from Dionysius and seem to go beyond scripture. This mostly deals with the hierarchy of angels and the appropriate naming of their ranks. His few statements on demons and their abilities line up with Puritans wrote on the subject quite well. It seems like the early and medieval church, as well as the Puritans, where far more willing to discuss angels and demons in more details than modern theologians. The sections on truth I found surprising especially the quote "God Himself is the first truth in which all other truth has its certitude." which sounds proto-Van Tilian. His speculations on the resurrected body and new heavens and new earth tend to go beyond scripture as well. These are probably the strangest parts of the shorter summa where he discusses cannibalism and bodily fluids and how they pertain the resurrected body. The later portion of the shorter summa is where Aquinas defends many views we now associated with Roman Catholicism such as venial and mortal sins, purgatory, perpetual virginity of Mary, the sinlessness of Mary, and concupiscence. Overall I agree with Aquinas in the areas you'd expect conservative Protestants and Catholics to agree and disagree with Aquinas in the areas you'd expect conservative Protestants and Catholics to disagree. I wish topics like predestination, natural law, nature, and grace would have taken up more space instead of the angelology and speculations on specifics of the resurrected body.
Profile Image for tom.
114 reviews2 followers
April 11, 2024
Christianity is cool and all but I really wish there were like 3 less chapters in that about semen cause 1 is too much to be talking about the Jesus jizz, that catholic cum, that 3rd-day finish. This is also the condensed version so it means he deemed it important enough to be mentioned in multiple chapters. St. Hornball over here.

Any adults reading this, my bad team just sit this one out.

Fav Quote: “Nevertheless men buried in the misery of Hell are not deprived of free choice, even though their will is immovably attached to evil. In the same way the blessed retain the power of free choice, although their will is fixed on the Good. Freedom of choice, properly speaking, has to do with election. But election is concerned with the means leading to an end. The last end is naturally desired by every being. Hence all men, by the very fact that they are intellectual, naturally desire happiness as their last end, and they do so with such immovable fixity of purpose that no one can wish to be unhappy. But this is not incompatible with free will, which extends only to means leading to the end. The fact that one man places his happiness in this particular good while another places it in that good, is not characteristic of either of these men so far as he is a man, since in such estimates and desires men exhibit great differences. This variety is explained by each man’s condition. By this I mean each man’s acquired passions and habits; and so if a man’s condition were to undergo change, some other good would appeal to him as most desirable.”
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