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1. On the three Primal Hypostases. 2. On the Origin and Order of the Post-Primals. 3. On the Conscious Hypostases and the All-Transcending. 4. How the Post-Primal derives from the Primal, and On the One. 5. That the Intelligibles are not outside the Intellectual-Principle and on the Good. 6. That there is no Intellectual Act in the Principle which transcends the Authentic-Existent; and On the Nature that has the Intellectual Act Primally and that which has it Secondarily. 7. Whether there are Ideas even of Particulars. 8. On Intellectual Beauty. 9. On the Intellectual-Principle, on the Ideas and on the Authentic-Existent.

26.

These Fourth and Fifth Enneads, again, I have arranged in the form of one distinct section.

The Last Ennead, the Sixth, constitutes one other section, so that we have the entire work of Plotinus in three sections, the first containing three Enneads, the second two, the third one Ennead.

The content of the third section, that is of the Sixth Ennead, is as follows:—

1, 2, 3. On the Kinds of the Authentic-Existent. ​4, 5. That the Authentic-Existent, one and identical, is everywhere present, integrally. 6. On Numbers. 7. How the Multitude of Ideas Exists; and On the Good. 8. On Free-Will and the Will of The One. 9. On The Good, or The One.

Thus, in sum, I have arranged the fifty-four treatises, constituting Plotinus' entire work, into six sets of nine: to some of the treatises I have further added commentaries—irregularly, as friends asked for enlightenment on this or that point—finally for all the treatises, except that on Beauty, which was not to hand, I have written Summaries which follow the chronological order: in this department of my work besides the Summaries will be found Developments; the numbering of these also adopts the chronological order.

Now I have only to go once more through the entire work, see to the punctuation and correct any verbal errors; what else has solicited my attention, the reader will discover for himself.