Aristotle's views do diverge from Plato's, but they are also derived from them. Plato contends that "the First Mover," or God, "is an immaterial soul, not a material thing at all" (Koons). Aristotle also argues that "the Unmoved Mover must be immaterial, since if He were material, He could move other things only by moving Himself, which would raise the necessity of explaining the motion of the Mover" (Koons). Koons points out that "Like Plato, Aristotle quickly concludes that this immaterial being must be a mind." It has been observed that "To the extent that Aristotle endows universals with reality, he is Platonic in thought" ("Plato and Aristotle").
Koons (1998) explores in some depth the Platonic and Aristotelian doctrines of God. He notes that Plato ascribes two attributes to God right from the start("animacy," or life, and "immateriality." Plato "argues that the First Cause of motion is very similar to living humans and animals, since in both cases we see self-generated motion" and that "unlike inanimate matter, living organisms move spontaneously, at the direction of their desires and rationality" (Koons). Plato deduces that "The first cause moves spontaneously, so it is probably alive" (Koons). Koons notes that "This seems to [be] an argument from analogy (God is like a living thing), or perhaps an argument to the simplest explanation: why postulate two different kin