This paper discusses two passages from Alexander of Aphrodisias’s commentary on Aristotle’s Topics that are transmitted in Ps-Jābir’s Kitāb al-Nukhab. It argues that the Arabic translation of Alexander’s commentary may have been made from a fuller version than what came down to us in Greek. Especially since the author(s) of the Jābir-corpus form a tradition different from the school of Ḥunayn b. Isḥāq (d. 873) and authors associated to the ‘Baghdad school’, whose earliest figure is Abū Bishr Mattā b. Yūnus (...) (d. 940), the Arabic fragments of Alexander’s commentary preserved in the Kitāb al-Nukhab promise to shed more light on the early reception of the Topics and the different contexts in which Aristotelian dialectic was studied in the Islamic world. (shrink)

In this paper I explore the ways in which Alexander of Aphrodisias employs and develops so-called ‘common notions’ as reliable starting points of deductive arguments. He combines contemporary developments in the Stoic and Epicurean use of common notions with Aristotelian dialectic, and axioms. This more comprehensive concept of common notions can be extracted from Alexander’s commentary on Metaphysics A 1–2. Alexander puts Aristotle’s claim that ‘all human beings by nature desire to know’ in a larger deductive framework, and adds weight (...) to Aristotle’s use of the common understanding of the notion of ‘wisdom’. Finally I will indicate how these upgraded common notions are meant to play an important role in the general framework of metaphysics as a science. (shrink)