From Allogenes:

He exists as an Invisible One who is incomprehensible to them all. He contains them all within himself, for they all exist because of him. He is perfect, and he is greater than perfect, and he is blessed. He is always One and he exists in them all, being ineffable, unnameable, being One who exists through them all – he whom, should one discern him, one would not desire anything that exists before him among those that possess existence, for he is the source from which they were all emitted. He is prior to perfection. He was prior to every divinity, and he is prior to every blessedness, since he provides for every power. And he a nonsubstantial substance, since he is a God over whom there is no divinity, the transcending of whose greatness and beauty …