In his commentary on Physics I 9, Simplicius claims that individual forms individuate matter. Given that in the same text he calls the immanent form ‘universal,’ it seems reasonable to conclude that the individual forms are individual instances of one universal species–form. However, Simplicius also mentions accidental properties that are peculiar to form rather than to matter. On the basis of Simplicius’ commentaries on the Categories and on the Physics, I argue that the individuating accidents are not part of the (...) individual forms, but that each individual’s form coordinates the individual’s accidental features. By belonging to a certain species, the individual form sets limits as to which accidents a matter–form compound can assume. This approach enables Simplicius to combine hylomorphism with a theory of individuation through properties. Furthermore, in his commentary on De Caelo I 9 Simplicius explains the uniqueness of each individual’s conglomeration of properties in light of his Neoplatonic cosmology: each individual corresponds to an individual cosmic disposition that determines its characteristic features. (shrink)

Simplicius claims in his Commentary on Aristotle’s Categories that quality is prior to the qualified according to nature. However, in an interesting passage in the same commentary, Simplicius describes the relation between quality and qualified in such a way that it strongly suggests an ontological simultaneity. The aim of this paper is to clarify Simplicius’ notion of natural priority and to investigate the extent to which the assumption of a natural priority of the quality over the qualified is compatible with (...) the assumption of a co-existence of quality and qualified. (shrink)