Plotinos: Complete Works, v. 2 In Chronological Order,...

We have just demonstrated that sensation belongs exclusively to an embodied soul, and that this implies organs. But we have nothing to do with the question whether the perceived object must be in contact with the organ, or whether the sensation can take place at a distance from the sense-object, by means of an intermediary; as the case of the fire which is located at a distance from our body, without the intermediary's suffering in any manner. It happens again where, empty space serving as intermediary between the eye and the color, one may well ask whether, to see, it suffice to possess the potentiality proper to that organ. But it is sure that sensation is some activity of the soul in a body, or through a body.