Author Guide · Late Roman Philosophy
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In 522 Boethius was at the top of Roman public life: both his sons were consuls that year, and Theodoric, the Ostrogothic king of Italy, made him magister officiorum, head of the government and palace services. A year later, at a royal council in Verona, he defended the senator Albinus against a charge of treasonous letters to the emperor in Constantinople, and was accused himself. He was imprisoned at Pavia and executed in about 524. In prison he wrote The Consolation of Philosophy, a dialogue in prose and verse with Philosophy herself, which became one of the most copied books of the Middle Ages. Before that he had spent twenty years carrying Greek learning into Latin: textbooks on arithmetic and music, translations of Aristotle’s logic with commentaries, and short treatises on Christian doctrine. This guide covers his nine key works, in order, and where to begin.
By Lisanne Swart · 9 key works · 500–524 · Updated October 2026
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Quick answer
Boethius’s best-known work is The Consolation of Philosophy (c. 524), written in prison before his execution. His other surviving works are textbooks on arithmetic (c. 500) and music (c. 510), translations of and commentaries on Porphyry’s and Aristotle’s logic, and five short theological treatises, among them On the Trinity (c. 520). Start with the Consolation; the logic and theology show where its arguments come from.
Where to Start with Boethius
If you want the book he is remembered for
→ The Consolation of Philosophy (524) — written in prison, in prose and verse.
If you want his theology
→ On the Trinity (520) — Aristotle’s logic applied to Christian doctrine.
If you want the source of medieval music theory
→ Fundamentals of Music (510).
If you want the logic the Middle Ages learned from
→ Commentaries on Porphyry’s Isagoge (504) — Porphyry’s questions about genera and species.
9 Boethius Works, in Order
On Arithmetic
His earliest surviving work, written around 500 and adapted from the Greek mathematician Nicomachus of Gerasa. It is a Latin textbook of the theory of number, closely based on its Greek model. Boethius groups arithmetic with music, geometry and astronomy as the four mathematical arts, the quadrivium, a name he is credited with. Michael Masi translated it into English as Boethian Number Theory (1983).
Commentaries on Porphyry’s Isagoge
Boethius translated Porphyry’s Isagoge, a Greek introduction to Aristotle’s logic, and wrote two commentaries on it, the first around 504–505 and the second around 507–509. In the second he takes up Porphyry’s unanswered questions about genera and species, and argues that universals, being common to many things, exist only in thought, yet still grasp something real. His logical commentaries were the main guide for European logicians from the ninth to the twelfth century.
Commentary on Aristotle’s Categories
A Latin translation of Aristotle’s Categories, the short treatise on the kinds of things that can be said about a subject, with a commentary written around 509–511. Boethius’s translations of Aristotle’s logical works remained the standard Latin versions through the Middle Ages.
Fundamentals of Music
A five-book treatise from around 510, compiled mainly from a lost work by Nicomachus and the first book of Ptolemy’s Harmonics. Boethius treats music as a science of numbers and divides it into three kinds: the music of the cosmos (musica mundana), the harmony of body and soul (musica humana) and the audible music of voices and instruments (musica instrumentalis). It made him the most revered authority on music in the Middle Ages, and it was one of the first music texts printed in Venice, in 1491–1492. Calvin Bower’s English translation appeared in 1989.
Against Eutyches and Nestorius
His earliest theological work, written around 513 after a letter from Greek bishops on the nature of Christ. Boethius uses Aristotelian logic to argue against two opposite positions, that of Eutyches (one nature in Christ) and that of Nestorius (two persons). On the way he defines a person as an individual substance of a rational nature, a definition later theologians took up.
Commentaries on Aristotle’s On Interpretation
A translation of Aristotle’s On Interpretation with two commentaries, a shorter one written no earlier than 513 and a longer one around 515–516. The longer commentary discusses Aristotle’s sea-battle passage on statements about the future. In it Boethius also announces his plan to translate and comment on all the writings of Plato and Aristotle, a project his death cut short.
On the Trinity
A short treatise addressed to his father-in-law Symmachus, written around 520–521 and linked to the debate set off in 519 by a group of Scythian monks in Rome. Boethius argues that the Trinity is one God and not three, working through Aristotle’s categories to show how they apply, and fail to apply, to God. It is the first of the five opuscula sacra, his theological tractates.
On Topical Differences
A treatise on how to find arguments, written around 522–523 and comparing the Greek theory of “topics” with Cicero’s. It framed how twelfth-century logicians thought about argument and helped Peter Abelard rediscover propositional logic. It stayed in use after the rest of his logic was superseded in the thirteenth century, and excerpts were translated into Old French by John of Antioch in 1282.
The Consolation of Philosophy
Written in prison around 523–524 while Boethius waited for execution. In five books of alternating prose and verse, the prisoner is visited by Philosophy, a woman he calls his nurse, who moves him from the goods of Fortune (in Book II she personifies Fortune turning her wheel) to the true good, then to providence, fate, free will and God’s foreknowledge. It names no Christian doctrine. About 400 manuscripts survive, and it was translated into English by King Alfred, Chaucer and Elizabeth I. Edward Gibbon called it “a golden volume not unworthy of the leisure of Plato or Tully”.
In What Order to Read Boethius
Only the Consolation was written for a general reader; everything else is a textbook, a commentary or a short treatise for specialists. So for most readers order is simple: start with the Consolation, which needs no background, and go further only if a particular argument catches you.
Publication order shows what came before the prison. The early textbooks and logical commentaries were part of his plan to bring Greek learning into Latin; the theological treatises apply the same logic to doctrine. Read the Consolation after them and you can see it drawing on both, while leaving Christian doctrine unnamed.
A reading path
1. The Consolation of Philosophy (c. 524), in P. G. Walsh (1999) or Joel Relihan (2001)
2. On the Trinity (c. 520) and Against Eutyches and Nestorius (c. 513), in the Loeb volume (1973)
3. Fundamentals of Music (c. 510), in Calvin Bower’s translation (1989)
4. The commentaries on Porphyry and Aristotle, for his logic
Everything Else Boethius Wrote
Beyond the 9 key works: 9 more, grouped by kind.
Open a group with the + to see every book in it.
Logical treatises and commentaries
6
6 books · 505–523
- 505On the Categorical SyllogismDe syllogismo categorico, c. 505–506
- 515On DivisionDe divisione, c. 515–520
- 516On Hypothetical SyllogismsDe hypotheticis syllogismis, c. 516–522
- 520Commentary on Aristotle’s Prior Analyticsc. 520–523
- 522Commentary on Cicero’s Topicsincomplete; written shortly before On Topical Differences
- 523Introduction to Categorical SyllogismsIntroductio ad syllogismos categoricos, c. 523
Other theological tractates
3
3 books · 520
- 520Whether Father, Son and Holy Spirit Are Substantially Predicated of the Divinityto John the Deacon; a short sketch for On the Trinity
- 520How Substances Are Good in Virtue of Their ExistenceDe hebdomadibus, to John the Deacon; date unknown
- 520On the Catholic FaithDe fide catholica, a statement of doctrine; date unknown and authenticity debated
The years · 480–524
Quick facts about Boethius
- Known for
- Writing The Consolation of Philosophy in prison while awaiting execution, and carrying Greek logic, mathematics and music theory into the Latin Middle Ages
- 480
- Born in Rome
- 500
- Meets Theodoric; textbook on arithmetic
- 510
- Consul
- 522
- Sons made consuls; he becomes magister officiorum
- 524
- The Consolation of Philosophy; executed
- Born
- c. 480, Rome; his father, Manlius Boethius, was consul in 487
- Raised by
- The senator Quintus Aurelius Memmius Symmachus, whose daughter Rusticiana he married
- Languages
- Fluent in Greek, which was rare in the Latin West of his day
- Offices
- Consul in 510; magister officiorum under Theodoric from 522
- Died
- c. 524, executed near Pavia after his conviction for treason
- Buried
- San Pietro in Ciel d’Oro, Pavia; venerated there as Saint Severinus, feast day 23 October
The red mark is c. 524: The Consolation of Philosophy, written in prison in the months before his execution.
How Boethius Writes: Prose, Verse and Proof
The Consolation is a prosimetrum: prose passages of argument alternate with poems in a range of Latin metres, so that each step of reasoning is followed by a song that restates or deepens it. It is also a dialogue, but a lopsided one: the prisoner complains, and Philosophy diagnoses and treats him, moving from gentler remedies in the first books to strict argument about providence, foreknowledge and free will in Book V, where she defines eternity as “the whole, simultaneous and perfect possession of unbounded life”.
Most of his other writing is teaching. The textbooks on arithmetic and music follow Greek models closely, Nicomachus and Ptolemy, and the logical works are translations with line-by-line commentaries. In the second commentary on On Interpretation he set out to translate and explain all of Plato and Aristotle; he finished the logical works, and his Latin versions remained standard for centuries.
His theology uses the same tools. In On the Trinity and Against Eutyches and Nestorius he applies Aristotle’s categories and definitions to Christian doctrine, which made the short treatises central texts for medieval theologians. The Consolation, by contrast, argues from philosophy alone and never names Christ, a difference readers have debated ever since.
Watch
Stephen Blackwood on Boethius and the Consolation of Philosophy
Stephen Blackwood, president of Ralston College and author of a study of the Consolation (Oxford, 2015), lectures on the book for the Temenos Academy in London in June 2019: its Greek roots, and how a person can keep hold of himself through injustice and misfortune.
Frequently asked questions about Boethius’s books
How many books has Boethius written?
About twenty surviving works, depending on how you count. This page lists nine key works and nine more below: logical treatises and commentaries, and three further theological tractates. He also translated Porphyry’s Isagoge and five of Aristotle’s logical works (Categories, On Interpretation, Prior Analytics, Topics and Sophistical Refutations); a treatise on geometry survives only in fragments.
What are Boethius’s books in order?
Approximately: On Arithmetic (c. 500), the commentaries on Porphyry’s Isagoge (c. 504–509), the commentary on Aristotle’s Categories (c. 510), Fundamentals of Music (c. 510), Against Eutyches and Nestorius (c. 513), the commentaries on On Interpretation (c. 513–516), On the Trinity (c. 520), On Topical Differences (c. 522) and The Consolation of Philosophy (c. 524). All these dates are scholarly estimates.
Where should I start with Boethius?
With The Consolation of Philosophy. It is the only work he wrote for a general reader, it needs no background in logic or theology, and it is short: five books of alternating prose and verse.
What is Boethius’s most famous book?
The Consolation of Philosophy, written in prison around 523–524. It was one of the most widely read books of the Middle Ages: about 400 manuscripts survive, and it was translated by King Alfred, Jean de Meun, Chaucer and Elizabeth I.
Which translation of The Consolation of Philosophy should I read?
The Cambridge University project Restoring Lost Songs recommends three English versions: P. G. Walsh (Oxford, 1999), in modern prose; Joel Relihan (Hackett, 2001), which renders the poems in metre; and the Loeb edition by H. F. Stewart, E. K. Rand and S. J. Tester (1973), with the Latin on facing pages. V. E. Watts’s Penguin Classics translation (1969, later revised) is also widely used, and H. R. James’s version of 1897 is free online.
Why was Boethius imprisoned and executed?
In 523, at a royal council in Verona, the official Cyprianus accused the senator Albinus of treasonous letters to the emperor Justin I in Constantinople. Boethius defended Albinus and was then accused himself, with three witnesses against him; Britannica notes that a charge of magic or sacrilege was added. He was imprisoned at Pavia, condemned with the Senate’s ratification, probably under pressure, and executed. Theodoric was an Arian Christian and Justin orthodox, which made any contact with Constantinople suspect. No proof of a crime has come down to us, and Procopius and most later historians considered him unjustly condemned.
When and how did Boethius die?
Most sources give 524, near Pavia; the Stanford Encyclopedia of Philosophy says probably 526. The sources disagree on the method: he may have been beheaded, clubbed or hanged, and torture with a cord tightened around his head is considered likely. His father-in-law Symmachus was executed soon after, according to Procopius.
Was Boethius a Christian?
Yes. He wrote four treatises on Christian doctrine that openly identify as Christian, and he is venerated as Saint Severinus in Pavia, where he is buried in San Pietro in Ciel d’Oro; the cult was confirmed in 1883. His status as a martyr is disputed, and because the Consolation never mentions Christ, some historians, Arnaldo Momigliano among them, have argued that his Christianity gave way to philosophy at the end.
Who translated The Consolation of Philosophy into English?
King Alfred the Great made an Old English version in the late ninth century, Chaucer a Middle English prose translation, Boece, in the fourteenth, and Elizabeth I translated it at Windsor in October and November 1593, shortly after her sixtieth birthday. Her manuscript is in The National Archives in London.
Why does Ignatius Reilly talk about Boethius?
In John Kennedy Toole’s novel A Confederacy of Dunces (1980), Ignatius Reilly cites Boethius and the Consolation throughout the novel. In Book II of the Consolation, Fortune says of herself: “I turn the wheel that spins.”
Footnotes
- Boethius — Wikipedia
- Anicius Manlius Severinus Boethius — Stanford Encyclopedia of Philosophy
- Boethius — Encyclopædia Britannica
- The Consolation of Philosophy — Wikipedia
- Elizabeth’s translation of The Consolation of Philosophy — The National Archives
- Text editions — Restoring Lost Songs, University of Cambridge
Bibliography last verified 9 October 2026. Where sources give different first-publication years, this page uses the year in library catalogues or the publisher’s own record.
This list was not put together by a machine.
The notes are all mine,
and the books are all his.
Lisanne x
Written by Lisanne Swart, who has curated reading lists and author guides at lisanneswart.com since 2021.
See more on her personal bookshelf.
“So true is it that nothing is wretched, but thinking makes it so, and conversely every lot is happy if borne with equanimity.”
— Boethius, The Consolation of Philosophy, Book II, in H. R. James’s translation (1897)
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