Ibn al-Fa's Kitmin, the Book of the Delight of the Believer preserves, in the first part, in at least three of its 100 philosophical and theological problems, passages from the hitherto lost Arabic version of Philoponus' De Aeternitate mundi contra Proclum. All quotations are taken from the refutation of the first proof, one of them from the beginning which is also lost in Greek. For this latter passage a parallel is found in al-Isfiz who draws on the same Philoponus source (...) in his Kit Masil al-umhiyya (Book on Metaphysical Questions). A comparison of the other passages to the extant Greek text suggests that al-Ank's overall accurate use of sources can be gained from his quotations of the extant Arabic versions of the De Anima-paraphrase, Nemesius' De Natura hominis and b. Rabban al-'s Firdaws al-ḥikma (Paradise of Wisdom). (shrink)

In Metaphysics Z 8 Aristotle offers an infinite regress argument to deny that forms come to be. Briefly put, the argument states that, if we assume that every time an x composed of matter (m1) and form (f1) comes to be, f1 also comes to be, then there would be infinitely many xs coming to be – for f1 would itself be a compound, if it comes to be, and the same reasoning would in turn apply to it. This argument (...) has great significance in the history of philosophy, for some later thinkers take Aristotle to allow or make room for the creation ex nihilo of forms. However, the only direct Greek engagement with this argument in its proper context is provided by Asclepius of Tralles’ commentary on Book Z. A close study of Asclepius’ interpretation shows that he endorsed the argument on the tacit condition that it refers to the forms αὐτὰ καθ’ αὑτά as different from both Platonic Ideas and enmattered forms. At the same time, however, its elaboration includes alongside forms αὐτὰ καθ’ αὑτά also eternal separate forms and generated forms. His reconstruction also displays a sophisticated toning-down of the potential disagreements between Plato and Aristotle on the conception of pre-existing form which is assumed in the argument. Asclepius’ interpretation offers yet further proof of the commentators’ camouflaged and stratified way of tackling philosophical issues of paramount importance. (shrink)

The “lost” Yaḥyā ibn ʿAdī treatises recently discovered in the Tehran codex Marwī 19 include a record of a philosophical debate instigated by the Ḥamdānid prince Sayf-al-Dawla. More precisely, Marwī 19 contains Yaḥyā’s adjudication of a dispute between an unnamed Opponent and Yaḥyā’s younger relative Ibrāhīm ibn ʿAdī (who also served as al-Fārābī’s assistant), along with Ibrāhīm's response to Yaḥyā’s adjudication, and Yaḥyā’s final word. At issue was a problem of Aristotelian exegesis: should “body” be understood as falling under the (...) category of substance or under the category of quantity? The unnamed Opponent argues that body is a species of substance; Ibrāhīm argues that technically speaking, body is a species of quantity, and hence an accident; and Yaḥyā judges that body is a species of substance, though for very different reasons than the Opponent gives. For the first time, the Arabic text of this exchange is edited and translated into English. Also provided is an Introduction that sets the debate in historical context, and discusses in particular the possible influence of John Philoponus. The debate is interesting and important not only because of the philosophical ramifications of the issues under discussion, but because it constitutes evidence of dialectical practice among Arabic-speaking philosophers from the middle of the 10th century. (shrink)

This study explores Theophrastus’ uses of two Aristotelian key concepts, energeia and entelekheia. Texts from the De causis plantarum come first into discussion. There, Theophrastus gives a kinetic...

R. Saadia Ga'on, which is known to have been substantially influenced by Saadia, in fine is also indebted to Stoic philosophy and physics.

R. Saadia Ga'on (882–942) de Baghdad tâchait d'éviter l'anthropomorphisme en avançant que les versets bibliques qui semblent attribuer des traits matériels à Dieu portent non sur Dieu Lui-même, mais sur une entité créée, la Gloire de Dieu, que Saadia décrivait comme un “air” extrêmement subtil. Cet article s'efforce de montrer que la conception saadienne d'un air quasi divin, par lequel Dieu accomplit Ses actes dans le monde matériel, est redevable à la doctrine stoïcienne dupneuma. Il s'ensuit que la théologie immanentiste (...) desḤasidey Ashkenaz(Piétistes allemands), que l'on sait avoir été trés influencée par Saadia, est un prolongement lointain de la philosophic et de la physique stoïciennes. (shrink)

Dans l'horizon de l’étude de la philosophie naturelle d'Averroès, le nouveau travail de Ruth Glasner intituléAverroes’ Physics: a Turning Point in Medieval Natural Philosophyoccupera assurément une place de premier plan. Dans cet ouvrage, RG propose une étude analytique des trois commentaires d'Averroès à laPhysiqued'Aristote – l’Abrégé, leCommentaire Moyenet leGrand Commentaire. La force incontestable de son travail réside tout d'abord dans son approche double du texte d'Averroès, à la fois philologique et théorique. Tout au long de son analyse, ces deux aspects (...) restent intimement liés et la mobilisation des instruments philologiques n'est jamais une fin en soi. Cette analyse a en effet pour but ultime de reconstruire le système du monde tel qu'Averroès le concevait. L'enjeu fondamental de cette étude est alors de supplanter la vision d'un Averroès interprète servile de la physique aristotélicienne et de présenter sa conception de la nature comme un système cohérent, organique et original. (shrink)

RésuméCet article se penche sur la réception des théories avicenniennes du mouvement au VIe/XIIe siècle. Avicenne a conçu des façons innovantes de comprendre le mouvement, répondant à la fois aux défis et conditions établis par la tradition philosophique antérieure et à ceux qui naissent de sa critique interne. Le mouvement est pour lui soit le mode d’être entre deux termes, soit le passage ou l'intervalle, le premier étant le type de mouvement extra-mentalement réel, tandis que le second est un produit (...) de l'imagination. Au VIe/XIIe siècle, la critique implicite conduite par certains savants prééminents aboutit, dans certains cercles, à l'adoption de la thèse selon laquelle le mouvement-passage est extra-mentalement réel. Cette position était jugée viable aussi bien par les tenants de l'atomisme que par ceux de la théorie de la continuité des corps. (shrink)