As the first book seemed Platonic, and the second Numenian, so this third one seems called forth by the practical opposition of astrologers or Gnostics. Later in life, his thirty-third book, ii. 9, was to take up again this polemic in more extended form. This chronologic arrangement of Plotinos's first three books reveals his three chief sources of interest—devotion to Plato, reliance on Numenius, and opposition to the Gnostics and astrologers.
[FOURTH ENNEAD, BOOK FIRST.]
Of the Being of the Soul.
It is in the intelligible world that dwells veritable being. Intelligence is the best that there is on high; but there are also souls; for it is thence that they descended thither. Only, souls have no bodies, while here below they inhabit bodies and are divided there. On high, all the intelligences exist together, without separation or division; all the souls exist equally together in that world which is one, and there is no local distance between them. Intelligence therefore ever remains inseparable and indivisible; but the soul, inseparable so long as she resides on high, nevertheless possesses a divisible nature. For her "dividing herself" consists in departing from the intelligible world, and uniting herself to bodies; it might therefore be reasonably said that she becomes divisible in passing into bodies, since she thus separates from the intelligible world, and divides herself somewhat. In what way is she also indivisible? In that she does not separate herself entirely from the intelligible world, ever residing there by her highest part, whose nature it is to be indivisible. To say then that the soul is composed of indivisible (essence) and of (essence) divisible in bodies means then no more than that the soul has an (essence) which dwells partly in the intelligible world, and partly descends into the sense-world, which is suspended from the first and extends downwards to the second, as the ray goes from the centre to the circumference. When the soul descended here below, it is by her superior part that she contemplates the intelligible world, as it is thereby that she preserves the nature of the all (of the universal Soul). For here below she is not only divisible, but also indivisible; her divisible part is divided in a somewhat indivisible manner; she is indeed entirely present in the whole body in an indivisible manner, and nevertheless she is said to divide herself because she spreads out entirely in the whole body.
[FIFTH ENNEAD, BOOK NINE.]
Of Intelligence, Ideas and Essence.
THE SENSUAL MAN, THE MORAL, AND THE SPIRITUAL.
1. From their birth, men exercise their senses, earlier than their intelligence,[106] and they are by necessity forced to direct their attention to sense-objects. Some stop there, and spend their life without progressing further. They consider suffering as evil, and pleasure as the good, judging it to be their business to avoid the one and encompass the other. That is the content of wisdom for those of them that pride themselves on being reasonable; like those heavy birds who, having weighted themselves down by picking up too much from the earth, cannot take flight, though by nature provided with wings. There are others who have raised themselves a little above earthly objects because their soul, endowed with a better nature, withdraws from pleasures to seek something higher;[107] but as they are not capable of arriving at contemplation of the intelligible, and as, after having left our lower region here, they do not know where to lodge, they return to a conception of morality which considers virtue to consist in these common-place actions and occupations whose narrow sphere they had at first attempted to leave behind. Finally a third kind is that of those divine men who are endowed with a piercing vision, and whose penetrating glance contemplates the splendor of the intelligible world, and rise unto it, taking their flight above the clouds and darkness of this world. Then, full of scorn for terrestrial things, they remain up there, and reside in their true fatherland with the unspeakable bliss of the man who, after long journeys, is at last repatriated.