The Six Books of Proclus on the Theology of Plato, Volume 2

For that which participates, being imperfect prior to participation, but becoming perfect through participation, is entirely secondary to that which is participated, so far as it is perfect by participating. For so far as it was imperfect, it is inferior to that which it participates, which makes it to be perfect. That however which is participated since it belongs to a certain thing, and not to all things, is again allotted an hyparxis subordinate to that which is something belonging to all things, and not to a certain thing. For the latter is more allied to the cause of all; but the former is less allied to it.

The imparticipable, therefore, is the leader of things which are participated; but the latter are the leaders of participants. For, in short, the imparticipable is one prior to the many; but that which is participated in the many, is one and at the same time not one; and every thing which participates is not one, and at the same time one.