DANIELA FERNANDES CRUZ

The present research focuses on Aristotle's Metaphysics Z17, analysing the impact of Aristotle's philosophy of science on the investigation of the substances. More specifically, the aim is to investigate the relevance of this methodology - the triadic model of causal explanation, originally developed in the Posterior Analytics II -, in the central books of the Metaphysics (mainly, Z17 and Η), through two main axes: i) the specific presentation of the model of demonstrative science from the Posterior Analytics, in order to appreciate similarities and differences, also clarifying whether the condition formulated in APo. II.9 hinders its application to substances; ii) a study of the hylomorphic analysis, and whether it can be used to describe substances in a triadic model adequate to a scientific investigation. In addition, our study involves to explore the notion of substance (οὐσία) as a cause (αἰτία), as presented in the initial lines of the chapter (Met. Ζ17 1041a6).