(15) The same holds also of astronomy. For treating of the description of the celestial objects, about the form of the universe, and the revolution of the heavens, and the motion of the stars, leading the soul nearer to the creative power, it teaches to quickness in perceiving the seasons of the year, the changes of the air, and the appearance of the stars; since also navigation and husbandry derive from this much benefit, as architecture and building from geometry. This branch of learning, too, makes the soul in the highest degree observant, capable of perceiving the true and detecting the false, of discovering correspondences and proportions, so as to hunt out for similarity in things dissimilar; and conducts us to the discovery of length without breadth, and superficial extent without thickness, and an indivisible point, and transports to intellectual objects from those of sense.

(7) We can scarcely do better, in fine, than follow Plato.

Thus:

In the universe as a whole there must necessarily be such a degree of solidity, that is to say, of resistance, as will ensure that the earth, set in the centre, be a sure footing and support to the living beings moving over it, and inevitably communicate something of its own density to them: the earth will possess coherence by its own unaided quality, but visibility by the presence of fire: it will contain water against the dryness which would prevent the cohesion of its particles; it will hold air to lighten its bulky matters; it will be in contact with the celestial fire- not as being a member of the sidereal system but by the simple fact that the fire there and our earth both belong to the ordered universe so that something of the earth is taken up by the fire as something of the fire by the earth and something of everything by everything else.

This borrowing, however, does not mean that the one thing taking-up from the other enters into a composition, becoming an element in a total of both: it is simply a consequence of the kosmic fellowship; the participant retains its own being and takes over not the thing itself but some property of the thing, not air but air's yielding softness, not fire but fire's incandescence: mixing is another process, a complete surrender with a resultant compound not, as in this case, earth- remaining earth, the solidity and density we know- with something of fire's qualities superadded.

We have authority for this where we read:

"At the second circuit from the earth, God kindled a light": he is speaking of the sun which, elsewhere, he calls the all-glowing and, again, the all-gleaming: thus he prevents us imagining it to be anything else but fire, though of a peculiar kind; in other words it is light, which he distinguishes from flame as being only modestly warm: this light is a corporeal substance but from it there shines forth that other "light" which, though it carries the same name, we pronounce incorporeal, given forth from the first as its flower and radiance, the veritable "incandescent body." Plato's word earthy is commonly taken in too depreciatory a sense: he is thinking of earth as the principle of solidity; we are apt to ignore his distinctions and think of the concrete clay.

Fire of this order, giving forth this purest light, belongs to the upper realm, and there its seat is fixed by nature; but we must not, on that account, suppose the flame of earth to be associated with the beings of that higher sphere.

No: the flame of this world, once it has attained a certain height, is extinguished by the currents of air opposed to it. Moreover, as it carries an earthy element on its upward path, it is weighed downwards and cannot reach those loftier regions. It comes to a stand somewhere below the moon- making the air at that point subtler- and its flame, if any flame can persist, is subdued and softened, and no longer retains its first intensity, but gives out only what radiance it reflects from the light above.

And it is that loftier light- falling variously upon the stars; to each in a certain proportion- that gives them their characteristic differences, as well in magnitude as in colour; just such light constitutes also the still higher heavenly bodies which, however, like clear air, are invisible because of the subtle texture and unresisting transparency of their material substance and also by their very distance.

(1) For to him knowledge (gnosis) is the principal thing. Consequently, therefore, he applies to the subjects that are a training for knowledge, taking from each branch of study its contribution to the truth. Prosecuting, then, the proportion of harmonies in music; and in arithmetic noting the increasing and decreasing of numbers, and their relations to one another, and how the most of things fall under some proportion of numbers; studying geometry, which is abstract essence, he perceives a continuous distance, and an immutable essence which is different from these bodies. And by astronomy, again, raised from the earth in his mind, he is elevated along with heaven, and will revolve with its revolution; studying ever divine things, and their harmony with each other; from which Abraham starting, ascended to the knowledge of Him who created them.

(8) But, we need not record in memory all we see; mere incidental concomitants need not occupy the imagination; when things vividly present to intuition, or knowledge, happen to occur in concrete form, it is not necessary- unless for purposes of a strictly practical administration- to pass over that direct acquaintance, and fasten upon the partial sense-presentation, which is already known in the larger knowledge, that of the Universe.

I will take this point by point:

First: it is not essential that everything seen should be laid up in the mind; for when the object is of no importance, or of no personal concern, the sensitive faculty, stimulated by the differences in the objects present to vision, acts without accompaniment of the will, and is alone in entertaining the impression. The soul does not take into its deeper recesses such differences as do not meet any of its needs, or serve any of its purposes. Above all, when the soul's act is directed towards another order, it must utterly reject the memory of such things, things over and done with now, and not even taken into knowledge when they were present.

On the second point: circumstances, purely accidental, need not be present to the imaging faculty, and if they do so appear they need not be retained or even observed, and in fact the impression of any such circumstance does not entail awareness. Thus in local movement, if there is no particular importance to us in the fact that we pass through first this and then that portion of air, or that we proceed from some particular point, we do not take notice, or even know it as we walk. Similarly, if it were of no importance to us to accomplish any given journey, mere movement in the air being the main concern, we would not trouble to ask at what particular point of place we were, or what distance we had traversed; if we have to observe only the act of movement and not its duration, nothing to do which obliges us to think of time, the minutes are not recorded in our minds.

And finally, it is of common knowledge that, when the understanding is possessed of the entire act undertaken and has no reason to foresee any departure from the normal, it will no longer observe the detail; in a process unfailingly repeated without variation, attention to the unvarying detail is idleness.

So it is with the stars. They pass from point to point, but they move on their own affairs and not for the sake of traversing the space they actually cover; the vision of the things that appear on the way, the journey by, nothing of this is their concern: their passing this or that is of accident not of essence, and their intention is to greater objects: moreover each of them journeys, unchangeably, the same unchanging way; and again, there is no question to them of the time they spend in any given section of the journey, even supposing time division to be possible in the case. All this granted, nothing makes it necessary that they should have any memory of places or times traversed. Besides this life of the ensouled stars is one identical thing so that their very spatial movement is pivoted upon identity and resolves itself into a movement not spatial but vital, the movement of a single living being whose act is directed to itself, a being which to anything outside is at rest, but is in movement by dint of the inner life it possesses, the eternal life. Or we may take the comparison of the movement of the heavenly bodies to a choral dance; if we think of it as a dance which comes to rest at some given period, the entire dance, accomplished from beginning to end, will be perfect while at each partial stage it was imperfect: but if the dance is a thing of eternity, it is in eternal perfection. And if it is in eternal perfection, it has no points of time and place at which it will achieve perfection; it will, therefore, have no concern about attaining to any such points: it will, therefore, make no measurements of time or place; it will have, therefore, no memory of time and place.

If the stars live a blessed life in their vision of the life inherent in their souls, and if, by force of their souls' tendency to become one, and by the light they cast from themselves upon the entire heavens, they are like the strings of a lyre which, being struck in tune, sing a melody in some natural scale... if this is the way the heavens, as one, are moved, and the component parts in their relation to the whole- the sidereal system moving as one, and each part in its own way, to the same purpose, though each, too, hold its own place- then our doctrine is all the more surely established; the life of the heavenly bodies is the more clearly an unbroken unity.

(3) That which Timaeus argues of the soul Doth not resemble that which here is seen, Because it seems that as he speaks he thinks. He says the soul unto its star returns, Believing it to have been severed thence Whenever nature gave it as a form. Perhaps his doctrine is of other guise Than the words sound, and possibly may be With meaning that is not to be derided. If he doth mean that to these wheels return The honour of their influence and the blame, Perhaps his bow doth hit upon some truth. This principle ill understood once warped The whole world nearly, till it went astray Invoking Jove and Mercury and Mars. The other doubt which doth disquiet thee Less venom has, for its malevolence Could never lead thee otherwhere from me. That as unjust our justice should appear In eyes of mortals, is an argument Of faith, and not of sin heretical. But still, that your perception may be able To thoroughly penetrate this verity, As thou desirest, I will satisfy thee.

(22) Wherefore, my son, thou shouldst give praise to God and pray that thou mayst have thy mind Good Mind. It is, then, to a better state the soul doth pass; it cannot to a worse. Further there is an intercourse of souls; those of the gods have intercourse with those of men, and those of men with souls of creatures which possess no reason. The higher, further, have in charge the lower; the gods look after men, men after animals irrational, while God hath charge of all; for He is higher than them all and all are less than He. Cosmos is subject, then, to God, man to the Cosmos, and irrationals to man. But God is o'er them all, and God contains them all. God's rays, to use a figure, are His energies; the Cosmos's are natures, the arts and sciences are man's. The energies act through the Cosmos, thence through the nature-rays of Cosmos upon man; the nature-rays [act] through the elements, man [acteth] through the sciences and arts.

(2) And what of lower things?

: the single thing here is not an all but a part and limited to a given segment of space; that other realm is all, is space, so to speak, and is subject to no hindrance or control, for in itself it is all that is.

And men?

As a self, each is a personal whole, no doubt; but as member of the universe, each is a partial thing.

But if, wherever the circling body be, it possesses the Soul, what need of the circling?

Because everywhere it finds something else besides the Soul .

The circular movement would be explained, too, if the Soul's power may be taken as resident at its centre.

Here, however, we must distinguish between a centre in reference to the two different natures, body and Soul.

In body, centre is a point of place; in Soul it is a source, the source of some other nature. The word, which without qualification would mean the midpoint of a spheric mass, may serve in the double reference; and, as in a material mass so in the Soul, there must be a centre, that around which the object, Soul or material mass, revolves.

The Soul exists in revolution around God to whom it clings in love, holding itself to the utmost of its power near to Him as the Being on which all depends; and since it cannot coincide with God it circles about Him.

Why then do not all souls thus circle about the Godhead?

Every Soul does in its own rank and place.

And why not our very bodies, also?

Because the forward path is characteristic of body and because all the body's impulses are to other ends and because what in us is of this circling nature is hampered in its motion by the clay it bears with it, while in the higher realm everything flows on its course, lightly and easily, with nothing to check it, once there is any principle of motion in it at all.

And it may very well be that even in us the Spirit which dwells with the Soul does thus circle about the divinity. For since God is omnipresent the Soul desiring perfect union must take the circular course: God is not stationed.

Similarly Plato attributes to the stars not only the spheric movement belonging to the universe as a whole but also to each a revolution around their common centre; each- not by way of thought but by links of natural necessity- has in its own place taken hold of God and exults.

(2) For time always proceeding the divine mode of knowledge becomes evanescent, through being frequently mingled and contaminated with much of what is mortal. This divine mode is indeed [in astrology also], and a certain clear indication of truth, though it is but small, is at the same time preserved in it. For it places before our eyes manifest signs of the mensuration of the divine periods, when it predicts the eclipses of the sun and moon, and the concursions of the moon with the fixed stars, and when the experience of the sight is seen to accord with the prediction. Moreover, the observations of the celestial bodies through the whole of time, both by the Chaldeans and by us, testify that this science is true. Indications, also, more known than these might be adduced, if the present discussion was precedaneously about these particulars. But as they are superfluous, and do not pertain to the knowledge of the peculiar dæmon, I shall, as it is fit so to do, omit them, and pass on to things more appropriate than these.