Further, a compound in the Intellectual order is not to be confounded with a compound in the realm of Matter; the Divine Reasons are compounds and their Act is to produce a compound, namely that [lower] Nature which works towards Idea. And there is not only a difference of function; there is a still more notable difference of source. Then, too, the Matter of the realm of process ceaselessly changes its form: in the eternal, Matter is immutably one and the same, so that the two are diametrically opposites. The Matter of this realm is all things in turn, a new entity in every separate case, so that nothing is permanent and one thing ceaselessly pushes another out of being: Matter has no identity here. In the Intellectual it is all things at once: and therefore has nothing to change into: it already and ever contains all. This means that not even in its own Sphere is the Matter there at any moment shapeless: no doubt that is true of the Matter here as well; but shape is held by a very different right in the two orders of Matter. Enneads II,4,3
The living-being of the compound order is not present [as pure and simple Idea] like the living being of the Intellectual order: in the compound entity, we are aware, at once, of the Reason-Principle and of the inferior element brought under form. Now the Universe is such a compound living thing: to observe, therefore, its content is to be aware not less of its lower elements than of the Providence which operates within it. Enneads III,3,6
But why should one order of Celestial descend to body and another not? The difference implies the existence of some cause or medium working upon such as thus descend. What would constitute such a medium? We are forced to assume that there is a Matter of the Intellectual Order, and that Beings partaking of it are thereby enabled to enter into the lower Matter, the corporeal. Enneads III,5,6
The knowing of the things belonging to the Intellectual is not in any such degree attended by impact or impression: they come forward, on the contrary, as from within, unlike the sense-objects known as from without: they have more emphatically the character of acts; they are acts in the stricter sense, for their origin is in the soul, and every concept of this Intellectual order is the soul about its Act. Enneads IV,6,2
All that is Intellectual-Principle has its being – whole and all – in the place of Intellection, what we call the Intellectual Kosmos: but there exist, too, the intellective powers included in its being, and the separate intelligences – for the Intellectual-Principle is not merely one; it is one and many. In the same way there must be both many souls and one, the one being the source of the differing many just as from one genus there rise various species, better and worse, some of the more intellectual order, others less effectively so. Enneads IV,8,3
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
Again, inasmuch as we restore them to an all-embracing unity, identifying all with unity, do we not see in this amalgamation Identity emerging as a Real Existent? Thus, in addition to the other three [Being, Motion, Stability], we are obliged to posit the further two, Identity and Difference, so that we have in all five genera. In so doing, we shall not withhold Identity and Difference from the subsequents of the Intellectual order; the thing of Sense has, it is clear, a particular identity and a particular difference, but Identity and Difference have the generic status independently of the particular. Enneads VI,2,8
But the beauty in the germ, in the particular Reason-Principle – is this the same as the manifested beauty, or do they coincide only in name? Are we to assign this beauty – and the same question applies to deformity in the soul – to the Intellectual order, or to the Sensible? That beauty is different in the two spheres is by now clear. If it be embraced in Sensible Quality, then virtue must also be classed among the qualities of the lower. But merely some virtues will take rank as Sensible, others as Intellectual qualities. Enneads VI,3,16
Still, this integral omnipresence admitted, why do not all things participate in the Intellectual Order in its entirety? Why has it a first participant, a second, and so on? We can but see that presence is determined by the fitness of the participant so that, while Being is omnipresent to the realm of Being, never falling short of itself, yet only the competent possess themselves of that presence which depends not upon situation but upon adequacy; the transparent object and the opaque answer very differently to the light. These firsts, seconds, thirds, of participance are determined by rank, by power, not by place but by differentiation; and difference is no bar to coexistence, witness soul and Intellectual-Principle: similarly our own knowledge, the trivial next the gravest; one and the same object yields colour to our sight, fragrance to smell, to every sense a particular experience, all presented simultaneously. Enneads VI,4,11
Now the reasoning faculty which undertakes this problem is not a unity but a thing of parts; it brings the bodily nature into the enquiry, borrowing its principles from the corporeal: thus it thinks of the Essential Existence as corporeal and as a thing of parts; it baulks at the unity because it does not start from the appropriate principles. We, however, must be careful to bring the appropriately convincing principles to the discussion of the Unity, of perfect Being: we must hold to the Intellectual principles which alone apply to the Intellectual Order and to Real Being. Enneads VI,5,2
If, then, unity is more pronounced in the continuous, and more again where there is no separation by part, this is clearly because there exists, in real existence, something which is a Nature or Principle of Unity. There cannot be a greater and less in the non-existent: as we predicate Substance of everything in sense, but predicate it also of the Intellectual order and more strictly there – since we hold that the greater and more sovereign substantiality belongs to the Real Beings and that Being is more marked in Substance, even sensible Substance, than in the other Kinds – so, finding unity to exhibit degree of more and less, differing in sense-things as well as in the Intellectual, we must similarly admit that Unity exists under all forms though still by reference, only, to that primal Unity. Enneads VI,6,13