ABSTRACT
Aristotle’s principle that everything that moves is moved by something else did not remain uncontested by his readers; the possible existence of self-moved movables could not be disregarded concerning the motion of the celestial spheres, the animals, or, in particular, the four elementary bodies. From the very beginning of his reading of Aristotle’s Physics, Averroes (Ibn Rushd) was very aware of the questions raised by the Greek commentators regarding this principle. The chapter investigates how Averroes answered those questions in his short, middle, and long commentaries on the Physics, focusing on the beginning of Book 7 and explaining the structure of the commentaries.
