Looking to these things, therefore, we may unfold what is said of paternal causes, and of the prolific powers of mothers in fables. For everywhere, we may suppose that the cause of a more excellent and more uniform nature is paternal; but we may say that the cause of a more subordinate and partial nature preexists in the order of a mother. For with the Gods a father is analogous to the monad, and the cause of bound; but a mother, to the duad, and to the infinite power which is generative of beings. The paternal cause, however, is with Plato uniform, and is established in a more elevated order than the natures which proceed from it, and subsists prior to its progeny in the allotment of the desirable.
Again, the maternal cause has the form of the duad [dyad]; and at one time presents itself to the view in fables as more excellent than its progeny, but at another time as essentially subordinate to it; as in the Banquet, Plato calls Poverty the mother of Love. And this is not only the case in fabulous figments, but also in the philosophic theory of beings, as is evident in the Timaeus.
For there Plato calls being the father, but matter the mother and nurse of generation. The powers, therefore, which are prolific and perfective of secondary natures, and the suppliers of life and causes of separation are mothers, being established above the natures produced by them.
But the powers which receive the natures that proceed into light, which multiply their energies, and extend even the subordinate allotment of the progeny, are also themselves called mothers.
Again, however, the progeny of such like causes, at one time indeed, proceed according to union from their proper principles, and are filled from both the paternal and maternal cause; but at another time they contain the bond of them, being arranged in the middle, conveying the gifts of the fathers to the maternal bosoms, and converting the receptacles of them to the completions of primary causes.
But of the natures which subsist from twofold preexisting principles, some are assimilated to the paternal cause; and such like genera of Gods are productive, defensive, and comprehensive. For to produce, to contain, and to defend, pertain to the cause of bound. But others are assimilated to the maternal cause and are prolific, and vivific, and the suppliers of motion, of the multiplication of powers, of variety and progressions. For all these are the progeny of infinity and the first multitude.