Thomas Aquinas on God

“That there is one First Being, possessing the full perfection of the whole of being, and that we call Him God, .... From the abundance of His perfection, He endows all existing things with being, so that He is fully established not only as the First Being but also as the original source of all existing things.”

“God is the most noble of beings. Now it is impossible for a body to be the most noble of beings; for a body must be either animate or inanimate; and an animate body is manifestly nobler than any inanimate body. But an animate body is not animate precisely as body; otherwise all bodies would be animate. Therefore its animation depends upon some other thing, as our body depends for its animation on the soul. Hence that by which a body becomes animated must be nobler than the body. Therefore it is impossible that God should be a body.”