Guthrie-Plotinus: sense-form

The soul and the exterior object do not therefore suffice (to explain sensation); for there would be nothing that suffers. There must therefore be a third term that suffers, that is, which receives the sense-form, or, shape. This third term must “sympathize,” or, share the passion of the exterior object, it must also experience the same passion, and it must be of the same matter; and, on the other hand, its passion must be known by another principle; last, passion must keep something of the object which produces it, without however being identical with it. The organ which suffers must therefore be of a nature intermediary between the object which produces the passion and the soul, between the sensible and the intelligible, and thus play the part of a term intermediary between the two extremes, being receptive on one side, making announcements on the other, and becoming equally similar to both. The organ that is to become the instrument of knowledge must be identical neither with the subject that knows, nor with the object that is known. It must become similar to both of them; to the exterior object because it suffers, and to the cognizing soul because the passion which it experiences becomes a form. Speaking more accurately, the sensations operate by the organs. This results from the principle asserted above, that the soul isolated from the body can grasp nothing in the sense-world. As used here, the word “organ” either refers to the whole body, or to some part of the body fitted to fulfil some particular function; as in the case of touch or sight. Likewise, it is easy to see that tools of artisans play a part intermediary between the mind which judges, and the object which is judged; and that they serve to discover the properties of substances. For instance, a (foot) rule, which is equally conformed to the idea of straightness in the mind, and to the property of straightness in the wood, serves the artisan’s mind as intermediary to judge if the wood he works be straight. [Ennead IV,4 (28) 23]

Indeed, this only Divinity loses none of His power by the birth of all the divinities contained within Him. All co-exist, and their individual distinctions obtain without their occupying separate localities or affecting a sense-form. Otherwise the one would be here, and the other there; each one would be individual, without simultaneously being universal in itself. Neither have they any parts that differ in each of them, or from each other; neither is the whole formed by each of them a power divided in a multiplicity of parts, a power whose magnitude would be measured by the number of its parts. Taken in its universality the intelligible world possesses a universal Power, which penetrates everything in its infinite development without exhausting its infinite force. He is so great that even His parts are infinite. There is no locality that He does not interpenetrate. Even our world is great; it likewise contains all the powers; but it would be much better, and its magnitude would be inconceivable if it did not also contain physical powers, which are essentially small (because limited). Fire and the other bodies cannot be called great powers because they consist only of an image of the infinity of the genuine Power by burning, crushing, destroying, and contributing to the generation of animals. They destroy only because they themselves are destroyed; they contribute to generation only because they themselves are generated. [Ennead V,8 (31) 9]