I am going to take the liberty of quoting at length from Randall's work concerning the celebrated doctrine of the "unmoved mover"---my training through Jan Van der Veken had exposed Aristotle's First Philosophy as a 'theologike' with the unmoved mover as a kind of monotheistic deity (this interpretation, as I recall, was championed by Giovanni Reale). Now imagine my excitement and shock when I discovered this paragraph in Randall (I will quote the paragraph in its entirety) ---concerning the 'unmoved movers' discussed in Aristotle's De Anima:
"Thus for Aristotle's analysis, every individual process has its own unique unmoved mover. The name is a generic term for a factor to be found in every process. There are untold billions of unmoved movers in Aristotle's world. When he generalizes, he gives to them a mythical unification, as in Book Lambda of the Metaphysics. And this mythically unified Unmoved Mover possesses the same traits as the factor in every process: in one sense it is immanent in every process, in another it is transcendent, and external to all processes. But even in Book Lambda Aristotle at once goes on to speak in chapter 8 of fifty-five unmoved movers. Aristotle's is a pluralistic philosophy, not a monotheistic theology (Randall, 71)."
Wow! This is for me a revelation that confirms a longheld intuition that in fact Aristotle's 'god' is the result of a particularly scholastic interpretation. Further, I have always sensed that Aristotle's philosophy has been 'Platonized' by the scholastics and that further, the governing notion of Deity as separate Transcendence is simply inaccurate. Perhaps the reason that this escaped me for so long is that having been raised Catholic, I was in a habit of thinking about God as a Being entirely separate, complete, perfect, finished as opposed to immanent, particularly with regard to nature. That is to say here is nature, the world or even the universe and outside of all this there is a divine world---according to Giovanni Reale's interpretation of Aristotle's Unmoved Mover---invisible, infinite and unchangeable. It appears to be a Platonizing effort which forges Aristotle's metaphysics into a 'theology of the Unmoved Mover'.
Aristotle may better be understood as philosopher of process, to use Whitehead's term. And as such it is this natural philosophy which is best equipped to discuss evolution and a universe in process. It is coherent with, for example, Teilhard's synthesis. The plurality of unmoved movers drawing forward biological processes by desire helps us to understand what Teilhard means by 'radial energy'. And the cumulative effort of these unmoved movers toward a unifying unmoved mover helps us to understand what Teilhard means by Omega. In fact this interconnected chain of desire from beginning to end resembles alpha and omega. However, not in a Platonic or Scholastic sense, of standing separate, outside, and complete. This notion of deity is 'implicate', immanent-transcendent, process-oriented. Being is only discovered as a particular type of natural being.
Addendum: Ayn Rand reviews Randall's book on Aristotle in a recorded lecture at the following link:https://secure2.convio.net/ari/site/SPageServer?pagename=reg_ar_aristotle
Ayn Rand exhibits her sharp and biting critique of Randall's work. She indicates several points which are well taken. I thoroughly agree with her evaluation of Aristotle as the most profound philosopher in the West and further that when Aristotle rises, civilization rises, and when Aristotle falls, so to does Western intellectual civilization. At the time of this lecture, Rand observes that philosophy is in bad repair and in fact, dying---hence, the time is ripe for a rehabilitation of Aristotle!