Henceforth, whatever our philosopher says about Matter will apply to extension and to extension alone. It cannot be apprehended by sight, nor by hearing, nor by smell, nor by taste, for it is neither colour, nor sound, nor odour, nor juice. Neither can it be touched, for it is not a body, but it becomes corporeal on being blended with sensible qualities. And, in a later essay, he describes it as receiving all things and letting them depart again without retaining the slightest trace of their presence.[483] Why then, it may be asked, if Plotinus meant extension, could he not say so at once, and save us all this trouble in hunting out his meaning? There were very good reasons why he should not. In the first place, he wished to express himself, so far as possible, in Aristotelian phraseology, and this was incompatible with the reduction of Matter to extension. In the next place, the idea of an infinite void had been already appropriated by the Epicureans, to whose system he was bitterly opposed. And, finally, the extension of ordinary experience had not the absolute generality which was needed in order to bring Matter into relation with that ultimate abstraction whence, like everything else, it has now to be derived. As a result of the preceding analysis, Plotinus at last identifies Matter with the Infinite—not an infinite something, but the Infinite pure and simple, apart from any subject of which it can be predicated. We started with what seemed a broad distinction between intelligible and sensible Matter. That distinction now disappears in a new and more comprehensive conception; and, at the same time, Plotinus begins to see his way towards a restatement of his whole system in clearer terms. ‘The Infinite is generated from the infinity or power or eternity of the One; not that there is infinity in the One, but that it is created by the One.’[484] With the first outrush of energy from the primal fount of things, Matter begins to exist. But no sooner do movement and difference start into life, than they are restrained and bent back by the presence of the One; and this reflection of power or being on itself constitutes the supreme self-consciousness of Nous.[485] Whether the subsequent creation of Soul involves a fresh production of energy, or whether a portion of the original stream, which was called into existence by the One, escapes from the restraining self-consciousness of Nous and continues its onward flow—this Plotinus does not say. What he does say is that Soul stands to Nous in the relation of Matter to Form, and is raised to perfection by gazing back on the Ideas contained in Nous, just as Nous itself had been perfected by returning to the One.[486] But while the two higher principles remain stationary, the Soul, besides giving birth to a fresh stream of energy, turns towards her own creation and away from the fountain of her life. And, apparently, it is only by this condescension on her part that