Science, Objectivity and Truth? It seems to me that Aristotle's God, which is a final not efficient cause of an eternal system, is in accord with Leibniz's God of fulgarations. Aquinas changed Aristotle by claiming he was wrong to say God is not the efficient cause of the world and that there could be multiple Gods. He provides his arguments to back them up. But I see a major flaw in Aquinas's argument. If God is omniscient than he knows what he will do. Except that God's choose to create is not due to his nature. So then in that case we have God completely freely choosing to create, instead of just loving himself freely and necessarily. Yet God knows he acted thusly in creating and thus knowing is knowledge. Aquinas says God is his knowledge, so the free choice to create would change God's nature in Aquinas's system!!