They hope to get the credit of minute and exact identification by setting up a plurality of intellectual Essences; but in reality this multiplication lowers the Intellectual Nature to the level of the Sense-Kind: their true course is to seek to reduce number to the least possible in the Supreme, simply referring all things to the Second Hypostasis – which is all that exists as it is Primal Intellect and Reality and is the only thing that is good except only for the first Nature – and to recognize Soul as the third Principle, accounting for the difference among souls merely by diversity of experience and character. Instead of insulting those venerable teachers they should receive their doctrine with the respect due to the older thought and honour all that noble system – an immortal soul, an Intellectual and Intelligible Realm, the Supreme God, the Soul’s need of emancipation from all intercourse with the body, the fact of separation from it, the escape from the world of process to the world of essential-being. These doctrines, all emphatically asserted by Plato, they do well to adopt: where they differ, they are at full liberty to speak their minds, but not to procure assent for their own theories by flaying and flouting the Greeks: where they have a divergent theory to maintain they must establish it by its own merits, declaring their own opinions with courtesy and with philosophical method and stating the controverted opinion fairly; they must point their minds towards the truth and not hunt fame by insult, reviling and seeking in their own persons to replace men honoured by the fine intelligences of ages past. Enneads II,9,6
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
But how explain beings by the side of Being, and the variety of intelligences and of souls, when Being has the unity of omnipresent identity and not merely that of a species, and when intellect and soul are likewise numerically one? We certainly distinguish between the soul of the All and the particular souls. Enneads VI,4,4
Still, how account for the many souls, many intelligences, the beings by the side of the Being? No doubt the beings proceed from the Priors in the mode only of numerical distinction and not as concrete masses, but the difficulty remains as to how they come to constitute the plenitude of the material universe. Enneads VI,4,4
But, admitting this one soul at every point, how is there a particular soul of the individual and how the good soul and the bad? The one<one soul reaches to the individual but nonetheless contains all souls and all intelligences; this, because it is at once a unity and an infinity; it holds all its content as one yet with each item distinct, though not to the point of separation. Except by thus holding all its content as one-life entire, soul entire, all intelligence – it could not be infinite; since the individualities are not fenced off from each other, it remains still one thing. It was to hold life not single but infinite and yet one life, one in the sense not of an aggregate built up but of the retention of the unity in which all rose. Strictly, of course, it is a matter not of the rising of the individuals but of their being eternally what they are; in that order, as there is no beginning, so there is no apportioning except as an interpretation by the recipient. What is of that realm is the ancient and primal; the relation to it of the thing of process must be that of approach and apparent merging with always dependence. Enneads VI,4,14
Similarly wisdom is entire to all; it is one thing; it is not distributed parcelwise; it cannot be fixed to place; it is not spread about like a colouring, for it is not corporeal; in any true participation in wisdom there must be one thing acting as unit upon unit. So must it be in our participation in the One; we shall not take our several portions of it, nor you some separate entire and I another. Think of what happens in Assemblies and all kinds of meetings; the road to sense is the road to unity; singly the members are far from wise; as they begin to grow together, each, in that true growth, generates wisdom while he recognizes it. There is nothing to prevent our intelligences meeting at one centre from their several positions; all one, they seem apart to us as when without looking we touch one object or sound one string with different fingers and think we feel several. Or take our souls in their possession of good; it is not one good for me and another for you; it is the same for both and not in the sense merely of distinct products of an identical source, the good somewhere above with something streaming from it into us; in any real receiving of good, giver is in contact with taker and gives not as to a recipient outside but to one in intimate contact. Enneads VI,5,10
Again: Man exists in the Intellectual and with him all other living things, both by possession of Real-Being and because that is the Life-Form Complete. Even the man of this sphere is a member of the Intellectual since that is the Life-Form Complete; every living thing by virtue of having life, is There, There in the Life-form, and man is There also, in the Intellectual, in so far as he is intellect, for all intelligences are severally members of That. Now all this means Number There. Yet even in Intellect Number is not present primally; its presence There is the reckoning of the Acts of Intellectual-Principle; it tallies with the justice in Intellectual-Principle, its moral wisdom, its virtues, its knowledge, all whose possession makes That Principle what it is. Enneads VI,6,15