Therefore, first let each become godlike and each beautiful who cares to see God and Beauty. So, mounting, the Soul will come first to the Intellectual-Principle and survey all the beautiful Ideas in the Supreme and will avow that this is Beauty, that the Ideas are Beauty. For by their efficacy comes all Beauty else, but the offspring and essence of the INTELLECTUAL-BEING. What is beyond the Intellectual-Principle we affirm to be the nature of Good radiating Beauty before it. So that, treating the Intellectual-Kosmos as one, the first is the Beautiful: if we make distinction there, the Realm of Ideas constitutes the Beauty of the Intellectual Sphere; and The Good, which lies beyond, is the Fountain at once and Principle of Beauty: the Primal Good and the Primal Beauty have the one dwelling-place and, thus, always, Beauty’s seat is There. Enneads I,6,9
In the first place, Plurality is later than Unity. The Intellectual-Principle is a number (= the expression of a plurality); and number derives from unity: the source of a number such as this must be the authentically One. Further, it is the sum of an INTELLECTUAL-BEING with the object of its Intellection, so that it is a duality; and, given this duality, we must find what exists before it. Enneads III,8,9
Why not resort to analogy? Admitted that the classification of the Sensible cannot proceed along the identical lines marked out for the Intellectual: is there any reason why we should not for INTELLECTUAL-BEING substitute Matter, and for Intellectual Motion substitute Sensible Form, which is in a sense the life and consummation of Matter? The inertia of Matter would correspond with Stability, while the Identity and Difference of the Intellectual would find their counterparts in the similarity and diversity which obtain in the Sensible realm. Enneads VI,3,2