Guthrie-Plotinus: sense-organ

But if (the intelligible Being) be present everywhere, why do not all (beings) participate in the intelligible (Being) entire? Why are there several degrees amidst these (beings), one being the first, the other the second, and so on? Because the (beings) which are capable of absorbing (intelligible Being) are counted as present thereto. Essence exists everywhere in that which is essence, thus never failing itself. Everything that can be present to it is present in reality, in the measure of its capacity, not in a local manner, as light is modified by transparence; for participation takes place differently in an opaque body. If we distinguish several degrees among beings, we shall surely have to conceive that the first is separated from the second, and the second from the third, only by its order, its power, its (individual) differences, but not by its location. In the intelligible world nothing hinders different things from subsisting together, such as soul and intelligence, and all the sciences, superior or inferior. Thus also in a single apple the eye sees color, the nostril smells perfume, and each other sense-organ perceives its individual quality. All these things subsist together and are not separated from each other. [Ennead VI,4 (22) 11]