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

Nor should we admit the existence of several intelligences, merely because we distinguish a thinker from a consciousness of the thinker. Though there be a difference between thinking, and thinking that one thinks, these two nevertheless constitute a single intuitive consciousness of its actualizations. It would be ridiculous to deny such a consciousness to veritable Intelligence. It is therefore the same Intelligence that thinks, and that thinks that it thinks. Otherwise there would be two principles, of which the one would have thought, and the other consciousness of thought. The second would doubtless differ from the first, but would not be the real thinking principle. A mere logical distinction between thought and consciousness of thought would not establish the (actual) differences between two (hypostatic substances). Further, we shall have to consider whether it be possible to conceive of an Intelligence which would exclusively think, without any accompanying consciousness of its thought.284 If we ourselves who are entirely devoted to practical activity and discursive reason were in such a condition,285 we would, even if otherwise considered sensible, be insane. But as true Intelligence thinks itself in its thoughts, and as the intelligible, far from being outside of Intelligence, is Intelligence itself, Intelligence, by thinking, possesses itself, and necessarily sees itself.286 When Intelligence sees itself, it does not see itself as unintelligent, but as intelligent.

Therefore in the first actualization of thought, Intelligence has the thought and consciousness of thought, two things that form but a single one; not even logically is this a duality. If Intelligence always thinks what it is, is there any reason to separate, even by a simple logical distinction, thought from the consciousness of thought? The absurdity of the doctrine we are controverting will be still more evident if we suppose that a third intelligence is conscious that the second intelligence is conscious of the thought of the first; we might thus go on to infinity.287