The Fifth Ennead treats of Intelligence. Each book in it also contains something about the principle superior to intelligence, and also about the intelligence characteristic of the soul, and about Ideas. 1. About the three Principal Hypostatic Forms of Existence, 10. 2. Of Generation, and of the Order of Things Posterior to the First, 11. 3. Of the Hypostatic Forms of Existence that Transmit Knowledge, and of the Superior Principle, 49. 4. How that which is Posterior to the First Proceeds from it? Of the One, 7. 5. The Intelligibles are not Outside of Intelligence. Of the Good, 32. 6. The Super-essential Principle Does Not Think. Which is the First Thinking Principle? Which is the Second? 24. 7. Are there Ideas of Individuals? 18. 8. Of Intelligible Beauty, 31. 9. Of Intelligence, of Ideas, and of Existence, 5. We have gathered the Fourth and Fifth Ennead into a single volume. Of the Sixth Ennead, we have formed a separate volume, so that all the writings of Plotinos might be divided into three parts, of which the first contains three Enneads, the second two; and the third, a single Ennead. Here are the books that belong to the Sixth Ennead, and to the Third Volume. 1. Of the Kinds of Existence, the First, 42. 2. Of the Kinds of Existence, the Second, 43. 3. Of the Kinds of Existence, the Third, 44. 4. The One Single Existence is everywhere Present in its Entirety, First, 22. 5. The One Single Existence is everywhere Present in its Entirety, Second, 23. 6. Of Numbers, 34. 7. Of the Multitude of Ideas. Of the Good, 38. 8. Of the Will, and of the Liberty of the One, 39. 9. Of the Good, or of the One, 9. This is how we have distributed into six Enneads the fifty-four books of Plotinos. We have added to several of them, Commentaries, without following any regular order, to satisfy our friends who desired to have explanations of several points. We have also made headings of each book, following the chronological order, with the exception of the book on The Beautiful, whose date of composition we do not know. Besides, we have not only written up separate summaries for each book, but also Arguments, which are contained among the summaries.[28] Now we shall try to punctuate each book, and to correct the mistakes. Whatever else we may have to do besides, will easily be recognized by a reading of these books. LIFE OF PLOTINOS, BY EUNAPIUS.