Note 121 — Concerning that which is Eternal, for the Purpose of demonstrating the Eternity of the World.

Thus for instance the first being, or being itself, does not flow from any being as its cause, because it is without any participation of being: and though it proceeds from a superior cause, i.e. the one itself, yet it does not proceed from this cause, on account of its being an imparticipable, but on account of its being subordinate to the one, and consequently a participant of the one. And this is likewise true in every other imparticipable.