Translations and commentaries on Aristotle's Categories
Boethius's early-sixth-century Latin translations and commentaries on Aristotle's Categories, On Interpretation, and Porphyry's Isagoge — the principal channel by which Aristotelian logic survived into the Latin West
Tradition: Late-antique Neoplatonist Aristotelianism / Latin scholastic logic
The single channel through which Aristotelian logic — the Organon — reached the Latin West for six centuries
Boethius announced a vast translation programme: render all of Plato and all of Aristotle into Latin and write commentaries demonstrating their fundamental agreement. He completed only part of the Aristotelian half — the Organon: Categories (with a single commentary and a double commentary), On Interpretation (single and double commentary), Prior Analytics, Topics, Sophistical Refutations, and a translation of Porphyry's Isagoge with two commentaries. The double-commentary form (one introductory, one technical) became the model for Latin scholastic exegesis. The Isagoge commentary contains the famous formulation of the problem of universals (do genera and species exist in reality, or only in the mind? — quaestio universalium) that organised the next six centuries of Latin philosophy. Until James of Venice's twelfth-century translations of the rest of the Aristotelian corpus, Boethius's logical works were the West's only direct access to Aristotle; the early scholastic logica vetus (Anselm, Abelard) is built almost entirely on them.
Editions cited
- In Categorias Aristotelis libri quatuor (PL 64); In librum Aristotelis Peri Hermeneias commentarii (single and double, PL 64); In Isagogen Porphyrii Commenta (CSEL 48, ed. Brandt 1906); modern English translations selectively (e.g., Spade, Five Texts on the Mediaeval Problem of Universals, Hackett 1994, for the Isagoge passages)
School Embodiments
Aquinas's mature logical-metaphysical vocabulary descends through Boethius — terms like "substance," "accident," "essence," and the formulation of the problem of universals are Boethian.
"Genera and species, do they exist by themselves, or only in the bare understanding? If they exist, are they corporeal or incorporeal? And are they separated from sensible things, or do they subsist in them?" (Commentary on the Isagoge, second commentary, Bk I, ch. 10 — Porphyry's three questions, set out by Boethius)
Boethius was the last great Latin Neoplatonist (Porphyry, Iamblichus, and the school of Ammonius lie behind his commentaries) and his reading of Aristotle is consistently Neoplatonist — Aristotle and Plato fundamentally agree.
"I am setting myself the task of bringing into Latin every book of Aristotle that I can find, and every dialogue of Plato — and of showing by way of commentary that they do not, in the main, disagree." (Commentary on On Interpretation, second commentary, prologue)
The translation programme was Platonist in motivation — to demonstrate the convergence of the two great Greek philosophical authorities and make them available to Latin readers.
"In all the dialogues of Plato and all the treatises of Aristotle, the philosophical truth is one and the same; the apparent disagreements come from differences of expression, not of substance." (On Interpretation commentary, prologue)
Boethius leaves the universals question open (in his second commentary on the Isagoge), but his treatment laid the ground for both medieval realism (Anselm) and conceptualism (Abelard); his transmission of Aristotle's Categories favours realism.
"The question whether universals are real things or mere conceptions belongs to a higher philosophy than this; we shall not pursue it here." (Commentary on the Isagoge, second commentary, Bk I, ch. 11)
The exhaustive analysis of inference patterns — particularly the categorical and hypothetical syllogism in the De syllogismo categorico and De syllogismo hypothetico — is rationalist in its confidence that thought has a deducible structure.
"Every demonstrative reasoning is a syllogism; every syllogism is reducible to one of the figures we have set out." (De syllogismo categorico, Bk II)
Boethius was a Latin Christian, but his approach to Aristotle through Greek Neoplatonist intermediaries connects him to the broader patristic tradition.
"The same God who is the source of being is also the source of the order that reason discloses in being." (Commentary on Categories, prologue)
Internal Tensions
Boethius's programme to translate all of Plato as well as all of Aristotle was cut short by his execution under Theodoric in 524; only the Aristotelian half (and only the logical part of that) was completed. The medieval West therefore received Aristotle's Organon directly but Plato only indirectly (through Augustine, Macrobius, and the Calcidius Timaeus). The double-commentary form bequeathed to scholasticism a methodology — exposition and disputation — but also a tendency to treat all philosophy as commentary, which the Renaissance later reacted against.
I. Time
Time as the framework of demonstration and inference — Aristotelian logical time, in which premises precede conclusions.
Attributes
II. Space
The "place" of the ten categories — substance, quantity, quality, relation, place, time, position, state, action, passion — as the categorial structure of being.
Attributes
III. Matter
Substance (ousia) as the primary category, with the nine accidental categories supervenient.
Attributes
IV. Observer
The rational soul whose syllogistic capacity gives it access to the structure of being.
Attributes
V. Energy
The energies of demonstration — the activity of reason moving from premises to conclusions.
Attributes
VI. Information
Logical form as the discrete, finite structure that organises all possible scientific knowledge.
Attributes
Personas with the nearest attribute fingerprint
Historical figures whose own classification on the same six-dimensional grid lands closest to this work's. Computed by attribute-agreement on coordinates both address.
Computed school proximity
The work's attribute fingerprint scored against all schools using the same quiz scorer. Useful as a sanity check on the hand-curated embodiments above.
How Translations and commentaries on Aristotle's Categories resolves each dilemma
51 resolved positions across 4 dimensions, including 9 distinctive where the majority of schools go the other way · 6 unaligned.
Each dimension is sorted so minority positions come first. Mainstream positions are folded into an expandable list.
Time · 9 dilemmas · 5 distinctive
Persistence, the future, and the direction of becoming.
4 mainstream positions
Matter · 7 dilemmas, all mainstream
Observer · 37 dilemmas · 3 distinctive
Mind, agency, and the knower's relation to the known.