Averroes physics : a turning point in medieval natural philosophy Introduction : science through exegesis The complexity of Averroes writing Description of the corpus The short commentary The middle commentary The long commentary The questions in physics The order of writing The changing cultural contexts Versions and revisions The short commentary The middle commentary The long commentary The late stratum of the long commentary The formal introduction The uses of syllogism The turning to alexander Averroes new physics The turning point of Physics VIII : the breakdown of determinism The challenge of indeterminism Conflicting messages in Aristotle The story of the middle commentary The riddle of the long commentary The turning point of Physics VI : the breakdown of motion Introduction: The various concepts of motion in Aristotles physics Aristotles divisibility argument : a crack in the interval model of motion (Physics VI.4) Physics V reinterpreted : from homogeneity to heterogeneity Physics VI reinterpreted : from a continuous interval to a contiguous chain Physics III reintepreted : from dimensional entity toboundary entity When did the turning point occur The turning point of Physics III : the breakdown of physical body Can physical body be a true homoeomer Aristotles moving agent argument (physics VII.1) Alexander vs. Galen on the meaning of essentiality Averroes notion of first moved part Averroes Aristotelian atomism The divorce between mathematics and physics When did the turning point occur