Abstract

Book III of Aristotle’s De caelo does not feature the Platonic concept of χώρα as a main protagonist. Through mere scarce allusions, Aristotle tends to treat it as just another concept of matter, reminiscent in many respects of those of Presocratic philosophers. In this paper, I argue that this biased presentation should be interpreted as Aristotle’s implicit refusal to acknowledge the role of the χώρα in Plato’s reform of participation, which is expounded in the Timaeus. I refer this refusal to Aristotle’s complex epistemological and methodological criticisms of Platonic paradigmatism. Reconstructing this implicit dialogue between Plato and Aristotle also sheds a new light on the stakes and consistency of book III of De caelo, which had remained elusive in earlier approaches. I suggest that book III does not aim to propose a consistent account of the four elements or of generation, but to build a new Aristotelian framework as an answer to the aporiai of Plato’s Timaeus.