Notes on Aristotle

Indication that the Prime Mover is not only the Ultimate Final Cause but also the First Efficient Cause? Movement of Animals, Book I, 1
(see Broadie)
Whether soul is moved (On the Soul I 3-4); how the First Mover moves it (Metaphysics Book Lambda, 7) -- final cause only?

Nature of light:
On the Soul II, 7 (necessity of a medium)
Is speed of light instantaneous? Is this what Aristotle is arguing here against Empedocles? If this is the position of Aristotle, is it consistent with what he says about change?

See Richard SORABJI, "Aristotle on colour, light and imperceptibles,"Bulletin of the Institute of Classical Studies (Bull. Inst. Class. Stud.) ISSN 0951-1253

2004, n^o47, pp. 129-140 [12 page(s) (article)]University of London, Institute of Classical Studies, London, ROYAUME-UNI (1984) (Revue)