The difference between Hegel and Aristotle, however, is that the Unmoved Mover, which is perfectly independent and self-sufficient, is no “system” in the sense of a unity of parts, because it has no parts. Aristotle regards organic being as the most perfect from of being nature, because of the integrity of the organism’s parts. Therefore, it could be said that Hegel transplants Aristotle’s criterion for “natural substance” into the “heavens,” and conceives the Unmoved Mover (Absolute Idea) on the model of organic being. This should not be surprising, for Hegel would regard Aristotle’s transcendent Unmoved Mover as an unrealized abstraction.
[…]
For Hegel the object of philosophy is God. Hegel identifies God with the Absolute Idea, just as Aristotle identified God with self-thinking thought.
– Hegel and the Hermetic Tradition (2001), p. 189-90