Do Avicenna’s extant works preserve any trace of his now-lost early philosophical production? This paper considers a hitherto neglected text, namely the chapter “On Hypothetical Propositions” from Avicenna’s “Concise Treatise on the Principles of Logic” (Risāla mūǧaza fī uṣūl al-manṭiq, henceforth: RM). The new evidence offered by the RM chapter in question will lead to a different reading of another well-known passage of Avicenna’s reworking of Aristotle’s Prior Analytics (Qiyās) from the “Book of Healing” (Kitāb al-šifāʾ). The clues gathered from an analysis of these two works will finally lead us to ponder the possibility that Avicenna may in fact have composed a (now lost) work on hypothetical propositions and syllogisms. Since Avicenna’s RM is to date unedited, an edition, as well as an English translation of the relevant chapter, is also provided in the Appendix of this paper.

Il est bien difficile de situer notre traité dans le temps et l'espace, ou même de le rattacher à une école déterminée. Aucune allusion ne permet de se faire une idée de l'appartenance religieuse de son auteur. Bénédiction initiale et eulogie finale sont des rites obligé (§ 60). La référence au “Créateur béni soit-il” (§17) ou à la sagesse divine (§ 31) est présente chez tout le monde. Aucun penseur n'est cité par son nom propre.

This article presents an edition, translation, and analysis of a prefatory letter addressed by the Galen translator Ḥunayn ibn Isḥāq (d. 873) to one of his East-Syrian Christian patrons, the physician Salmawayh ibn Bunān (d. 840). Ḥunayn composed this Letter to Salmawayh ibn Bunān in Syriac, but it survives only in his nephew's Arabic translation. Since its discovery over eighty years ago, the text has received little attention and has never before been published in its entirety. The Letter provides new insight into Ḥunayn's early career and the Christian milieu in which he moved, demonstrating his indebtedness to the Syriac literary past exemplified by the prefaces of the earlier Galen translator Sergius of Rēšʿaynā (d. 536). At the same time, the Letter indicates part of what made ʿAbbāsid-era translators like Ḥunayn different from their late ancient predecessors. This study argues that increased demand from patrons and Ḥunayn's close reading of Galen's Hippocratic commentaries yielded the Letter’s novel claim that readers of all abilities can and should have access to ancient Greek scientific texts. In this way, the Letter hints tantalizingly at Ḥunayn's understanding of his own literary and scientific project and its relationship with the ancient Greek tradition.