It is not Matter itself that is here meant, but the ultimate Cause of things incorporeal, which also existed before Matter. Moreover, it is asserted by Heraclitus: "Death unto souls is but a change to liquid." This Attis, therefore, the intelligible Power, the holder together of things material below the Moon, having intercourse with the pre-ordained Cause of Matter, holds intercourse therewith, not as a male with a female, but as though flowing into it, since he is the same with it.

Upon The Mother Of The Gods (c. 362-363)