Since, however, Timæus says that the primary and intelligible paradigms have their subsistence in intelligible animal, and that all these are four, unfolding themselves first into light, according to the all-perfect tetrad,--this being the case, in the first place it deserves to be considered, that as species or _forms_ present themselves to the view in the intelligible, it is necessary by a much greater priority, that the _genera_ of beings should pre-subsist in intelligibles. For it is not possible to admit that forms are intelligible, but that genera are intellectual only. But as forms exist intelligibly indeed, according to their first subsistence, but the pleroma, or plenitude of them shines forth in the intellectual[195] gods, and divides that which is total into more partial decrements, produces the uniform into multitude, and expands that which is exempt into coordinate causes, thus also the genera of being are occultly and indivisibly in intelligibles, but are accompanied with separation in intellectuals. And on this account the first triad indeed has essence for that which is mixed; but the second has life, where there was motion and permanency, life both abiding and proceeding; and in the third there are sameness and difference. For the all-perfect multitude indeed, is through intelligible difference, but the united and that which is comprehensive in common of parts according to genera, and according to one, is through intelligible sameness. And all these subsist intelligibly, essentially, and uniformly in these triads.