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[BOÈCE (Anicius Manlius Severinus Boethius)].
Extracts from the Introductio ad syllogismos categoricos.
In Latin, manuscript on parchment, fragment extracted from a dismembered manuscript found in a loose binding (traces of leather folds, some discharges in the margins, some stains but generally good condition).
With a diagram and two schematics; some penciled essays (fol. 1 verso, 15th c. hand): "This Monday after Easter. Je commence d'estudier en decret soubz Monseigneur Maistre Guillaume Dubreuil"); other signature "Jacquet".
France, 12th century.
Rediscovered two leaves with diagrams and diagram of a work of syllogistics by Boethius. The elegant writing would benefit from being better located, and other fragments of this manuscript will perhaps surface. The recent philological study (2008) does not record this witness.
Leaflet 1 : Size : 310 x 220 mm. Text: recto, incipit: "[...] particulares vere sint tum universales vere..."; explicit: "[...] ad evidentiam rerum descrptio supponatur", followed by a diagram/schema "Universalis affirmatio. Contrariae. Universalis negatio"; verso, incipit: "Ex his igitus quod superius [...]"; explicit: "[...] simul igitur particularis affirmatio et negatio salse sunt [...]".
Edition: Migne, PL, LXIV, 774B - 775A (recto) and 775B - 776A (verso). - Thomson Thörnqvist, 2008 (Studia Graeca et Latin, 69), pp. 37-40 (recto) and pp. 41-43 (verso).
Folio 2: Size: 307 x 204 mm. Text: recto, incipit: "[...] lapides non sint tamen ab hominum ..."; explicit: "[...] ut de eodem homine grammaticus [...]", with a diagram; verso, incipit: "utrisque aderit falsa sententia [...]"; explicit: "[...] easdem lector expediet pretereundum videtur", with a diagram.
Edition: Migne, PL, LXIV, 790 A - 791B (recto) and 791C - 794B (verso). - Thomson Thörnqvist, 2008 (Studia Graeca et Latin, 69), pp. 74-77 (recto) and pp. 77-81 (verso).
Among the works attributed to Boethius are five treatises on logic, including the work known as Introductio ad syllogismos categoricos or Antepraedicamenta in some manuscripts. Several authors have studied the manuscript tradition of this work: Van de Vijver lists 18 manuscripts from the 9th to the 12th century, De Rijk reports 17 manuscripts of the treatise. The more complete and recent study (Thomson Thörnqvist, 2008 Studia Graeca et Latin, 69) lists 21 manuscripts containing this treatise (Thomson Thörnqvist: "The tradition is extremely rich in variants"). This is fewer witnesses than the other work on syllogisms by Boethius entitled De syllogismo categorico, for which 47 witnesses are listed (Thomson Thörnqvist, 2008 Studia Graeca et Latin, 68). For C. Thomson Thörnqvist, the Introductio ad syllogismos categoricos is a second version of the first text De syllogismo categorico (see Thomson Thörnqvist, 2008 Studia Graeca et Latin, 68, p. xxxix). The editio princeps of the Introductio ad syllogismos categoricos of Venice, 1492.
Boethius' logical work is divided into three groups of texts. First, the Latin translations of Greek texts. Among these translations of Greek works, Boethius translated into Latin Aristotle's works on logic, including the Categories; On Interpretation; First and Second Analytics; Topics; Sophistic Refutations. Second, there are Boethius' commentaries on the logical works of Aristotle, Porphyry and Cicero, some of which have not survived. Third, there are the treatises on logic cited above.
Boethius was a "ferryman" of Greek texts on logic to the Latin world: "What, then, was Boethius' contribution to the study of logic? First, Boethius was not an original logician: he did not pretend to be. He saw himself as a translator, conveying Greek wisdom to a Greekless world; the insights which his works contain are not his own, his knowledge is tralaticious. From time to time we can, I believe, hear Boethius' own voice; and some at least of the disposition and organisation of his material originated in his own head. But those touches of personality are relatively rare and relatively unimportant: the summa logicae which Boethius determined to present was traditional Peripatetic logic; and it is an error to speak of a Boethian logic [...] It is rather within the context of his own dark times that Boethius' service to logic must be sought. Greek learning was increasingly inaccessible, and the Latin world was rude. By his sole efforts Boethius ensured that the study of Aristotle's Organon, and with it the discipline of logic, was not altogether eclipsed in the West. Boethius' labours gave logic half a millenium of life: what logician could say as much as that for his work? What logician could desire to say more? (Barnes, 1981, pp. 84-85).
Barnes, Jonathan. "Boethius and the Study of Logic," in Boethius: His Life, Thought and Influence, edited by M.
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