ARISTOTLE' SUPREME DEITY : GOD, MOVER OF THE UNIVERSE.

Aristotle's own supreme deity is the primal mover of the universe, someone so elevated as to be only thinking -the highest from of life- and thinking about thinking, at that.
in his tautological fashion, this supreme being is untarnished, untouchable, closed to its own perfection.
Were it to think about anything other than its own thinking, it would be vulnerable, in risk of losing its grandeur or its perfection.
This being Aristotle calls God, and defines: "God is a supreme and eternal Being, so that to God belong life and continuous and eternal duration. For that is what God is.
Aristotle believed that all movement depends on there being a mover. Movement, for him, meant more than something traveling from A to B. Movement included change, melting, cooling, heating, etc.
Aristotle argued that behind every movement there existed a chain of events that brought about the movement that we see taking place. This chain of events lead us back to something which moves but is itself unmoved. This, he referred to as the Prime Mover.
The Prime Mover, to Aristotle, is the first of all substances, the necessary first source of movement which is itself unmoved. It is a Being with everlasting life. This Being, Aristotle calls God. This Being does not start off the movement by giving some kind of push, but it is the purpose, or end, of the movement.
Aristotle believed the Prime Mover causes things to move by attraction in much the same way that a bowl of milk attracts a cat. The milk attracts the cat but cannot be said to be changed in the process. Action and reaction are equal and opposite. The keen establishment of this principle assured the concept that the Prime Mover is itself Unmoved, or unaffected, otherwise the whole concept would break down. God draws things to Himself and remains unaffected. The stars and the planets move out of a spiritual desire to imitate God. They do this by moving in eternal circles.
He also believed that change is eternal. A first change never existed, because something had to happen to set it off, and this itself would have been a change, and so on.
Aristotle believed that God does not depend on anything else fro existence. He never changes, never begins and never ends, and so is eternal. The Prime Mover also is immaterial. It could not be made of any kind of stuff, because matter is capable of being acted upon. Matter has potential to change. Since God is immaterial, it cannot perform any kind of physical, bodily action. The activity of God is purely spiritual and intellectual. The activity of God is thought.