The Latin Tradition of Studying Porphyry’s Isagoge, ca 800‒980: A Catalogue of Manuscripts, Glosses, and Diagrams

L’Isagoge de Porphyre a été l’un des textes fondamentaux pour l’enseignement de la logique dans l’Occident latin. Cet article veut montrer son importance, à partir de l’étude des manuscrits, pour la période 800-980. L’introduction générale est suivie d’un catalogue des manuscrits qui transmettent l’Isagoge, ou bien l’un des commentaires de Boèce à l’Isagoge. Pour chaque manuscrit, sont indiqués la datation, le contenu général, les gloses et les diagrammes liés à l’Isagoge. // Porphyry’s Isagoge was one of the most important fundamental texts for the study of logic throughout the whole Latin Middle Ages. In this article, I document its importance in the period from ca800 to ca 980 by providing an assessment of manuscript evidence. After a general introduction, I list all existing Latin manuscripts transmitting either Porphyry’s Isagoge or one of Boethius’s commentaries on the Isagoge. For each manuscript, I note date, overall content, glosses and diagrams on Isagoge-related material. // L’Isagoge di Porfirio fu una delle opere più importanti fondamentali per lo studio della logica in ambito latino per l’intero medioevo. Questo articolo documenta l’importanza dell’opuscolo porfiriano nel periodo 800-980ca attraverso uno studio dei testimoni manoscritti. Dopo un’introduzione di natura generale, si presenta un catalogo di tutti i manoscritti latini conservati che trasmettono l’Isagoge oppure uno dei due commenti di Boezio allo scritto porfiriano. Per ogni manoscritto si discutono la datazione, il contenuto generale, le glosse e i diagrammi legati all’Isagoge. //

Porphyry's Isagoge was one of the most fundamental texts for the study of logic throughout the whole Latin Middle Ages. In this article, I document its importance in the period from ca 800 to ca 980 by providing an assessment of manuscript evidence. After a general introduction, I list all existing Latin manuscripts trasmitting either Porphyry's Isagoge or one of Boethius's commentaries on the Isagoge. For each manuscript, I note date, overall content, glosses and diagrams on Isagoge-related material.