MacKenna-Plotinus: irradiation

11. In childhood the main activity is in the Couplement and there is but little IRRADIATION from the higher principles of our being: but when these higher principles act but feebly or rarely upon us their action is directed towards the Supreme; they work upon us only when they stand at the mid-point. Enneads   I,1,11

But how does it thus contain the good within itself? It is, itself, of the nature of the good and it has been strengthened still towards the perception of all that is good by the IRRADIATION of the Intellectual-Principle upon it; for this pure phase of the soul welcomes to itself the images implanted from its prior. Enneads V,3,3

Now if these activities arise from some unexplained first activity in that principle, then it too contains the manifold: if, on the contrary, they are the very earliest activities and the source and cause of any multiple product and the means by which that Principle is able, before any activity occurs, to remain self-centred, then they are allocated to the product of which they are the cause; for this principle is one thing, the activities going forth from it are another, since it is not, itself, in act. If this be not so, the first act cannot be the Intellectual-Principle: the One does not provide for the existence of an Intellectual-Principle which thereupon appears; that provision would be something [an Hypostasis] intervening between the One and the Intellectual-Principle, its offspring. There could, in fact, be no such providing in The One, for it was never incomplete; and such provision could name nothing that ought to be provided. It cannot be thought to possess only some part of its content, and not the whole; nor did anything exist to which it could turn in desire. Clearly anything that comes into being after it, arises without shaking to its permanence in its own habit. It is essential to the existence of any new entity that the First remain in self-gathered repose throughout: otherwise, it moved before there was motion and had intellectual act before any intellection unless, indeed, that first act [as motionless and without intelligence] was incomplete, nothing more than a tendency. And what can we imagine it lights upon to become the object of such a tendency? The only reasonable explanation of act flowing from it lies in the analogy of light from a sun. The entire intellectual order may be figured as a kind of light with the One in repose at its summit as its King: but this manifestation is not cast out from it: we may think, rather, of the One as a light before the light, an eternal IRRADIATION resting upon the Intellectual Realm; this, not identical with its source, is yet not severed from it nor of so remote a nature as to be less than Real-Being; it is no blind thing, but is seeing and knowing, the primal knower. Enneads V,3,12

15. Conferring but how? As itself possessing them or not? How can it convey what it does not possess, and yet if it does possess how is it simplex? And if, again, it does not, how is it the source of the manifold? A single, unmanifold emanation we may very well allow how even that can come from a pure unity may be a problem, but we may always explain it on the analogy of the IRRADIATION from a luminary but a multitudinous production raises question. Enneads V,3,15