These things, therefore, being thus determined, we may see how in the Timæus, the demiurgus and father of this universe, at one and the same time impartibly constitutes the world, gives to it essence, and supplies it with existence, fashioning bodies, generating souls in the middle of an impartible and partible essence, and constituting intellects ingenerably [i.e. without generation] and indivisibly, from the first genera. And farther still, besides these things, he distributes different motions to souls and bodies, divides each of them all-variously, according to harmonic reasons, binds them by analogies, and converts them to himself, and his own will. How, therefore, can we any longer rank such a demiurgus as this in the same order with one of these three fathers. For those things which they are said to give to the universe divisibly, he constitutes impartibly from himself. Nor does he produce some things precedaneously, and others according to accident, but by his very being he generates essence, supplies motions, and extends the divisions of mundane forms, and after the progression of other things, converts all things to himself, abiding in his own accustomed manner.
In the second place, therefore, we say that the three demiurgi differ from each other, because the first paternally comprehends the rest, and is the father of this whole triad. But the second is the power of the triad, and participates of the extremes according to the peculiarity of powers. And the third is the intellect of the triad, and contains the paternal, and intellectual power [by participation]. And in short, the first is the father of both; but the second is the power of both; and the third is the intellect of both. How, therefore, can the demiurgus of wholes be the same with one of the above mentioned fathers? For he, as Timæus says, is the father of all the world, and is allotted in himself a paternal power and divine intellect, converting all things to the watch-tower of himself. Again, therefore, we find that the partible peculiarities of the three demiurgi, pre-exist in him impartibly and uniformly. And as the demiurgic triad participates of union with him, on account of the uncircumscribed transcendency of the monad, thus also the monad antecedently and occultly comprehends in itself the triad, according to the power of cause. Nor is it proper to confound these with each other, but it is requisite to exempt the monad from the triad, and to suspend the triad from the monad. And neither ought we to make the three fathers, the rulers of total fabrication, nor to rank the first of them in the same order with the one demiurgus. For a co-ordinated entirely differs from an exempt cause. And that which produces all things according to comprehension perfectly differs from that which is similarly present to all things, and is equally distant from all things. Besides this also, multitude is every where suspended from its proper monad. And as the one precedes the total orders of things, so likewise each order of the Gods has its progression from a monad; since also each God is allotted a union which antecedes the multitude he contains. But if the whole genus of the Gods, and each God proceed after the same manner, it is also necessary that each of the divided orders should have the same mode of subsistence.
In the third place we say that both Plato and the ancient theology of the Greeks assert, that these three demiurgi divide the uniform kingdom of their father Saturn. And that one of these three every where arranges and adorns the first of wholes, another the middles, and another the extremities of wholes; and that each is allotted this order, not in fabrication only, but also in the providence of partial souls. For of these, some indeed are arranged and perfected under the first, prior to generation; but others, that give completion to generation, are arranged under the second; and others, that require purification after generation, are perfected under the third. Moreover, the first demiurgus, as it is written in the Timæus, produces the whole world. For he constitutes the circulation of the same, and arranges and adorns the circulation of the different, and all sublunary natures as far as to the earth, which he fabricated to be the guardian of night and day, being immoveably fixed about the axis which is extended through the poles of the universe. He also fills the whole parts of the world with their proper numbers, and gives generation to all of them, both to those that revolve manifestly, and to those that become manifest when they please. Again, he defines the whole period to partial souls, the measures of their descent into generation, the vicissitudes of the present life, and their restitutions to their kindred star, and he is also said to unfold to them all the laws of Fate, and to point out to them the nature of the universe. Hence, he is not one of these three fathers, nor is he co-arranged with them, but is perfectly exempt from the triad. According likewise to the proper prerogative of his empire, he is expanded separately above each, and in common above all of them. And the operations indeed, of these fathers, are divided about him, and are distinguished by more partial boundaries. But his fabrication is uncircumscribed, is one whole, and is impartible.
The Six Books of Proclus, the Platonic Successor, on the Theology of Plato (vol. 2 of 2) · The Wunder Library — complete classics, free to read, with narration.