(2) But, as your question now stands, with respect to the peculiarities by which these genera are separated, you alone speak of the peculiarities of energies. Hence you inquire concerning the difference in the last things pertaining to them; but you leave uninvestigated such things as are first, and most honourable in them, and which are the elements of their difference. In the same place, also, something is added concerning “ efficacious and passive motions ,” which is a division by no means adapted to the difference of the more excellent genera. For the contrariety of action and passion is not inherent in any one of them; but their energies are unrestrained, immutable, and without habitude to their opposites. Hence, neither must we admit in them motions of such a kind as arise from action and passion. For neither do we admit in the soul a self-motion, which consists of the mover and that which is moved; but we conceive that it is a certain simple essential motion, subsisting from itself, and not possessing a habitude to another thing, and exempt from acting on, and suffering from, itself. Who, therefore, can endure that the peculiarities of the genera superior to the soul, should be distinguished according to active or passive motions?

(89) Timaeus: Further, as concerns the motions, the best motion of a body is that caused by itself in itself; for this is most nearly akin to the motion of intelligence and the motion of the Universe. Motion due to the agency of another is less good; and the least good motion is that which is imparted to a body lying in a state of rest and which moves it piecemeal and by means of others. Wherefore the motion that is best for purgings and renovations of the body consists in gymnastic exercises; and second-best is the motion provided by swaying vehicles, such as boats or any conveyances that produce no fatigue; while the third kind of motion, although useful for one who is absolutely driven to it,

(8) Of this I'll give thee here on earth an instance, which the eye can see. Regard the animals down here - a man, for instance, swimming! The water moves, yet the resistance of his hands and feet give him stability, so that he is not borne along with it, nor sunk thereby. A: Thou hast, Thrice-greatest one, adduced a most clear instance. H: All motion, then, is caused in station and by station. The motion, therefore, of the cosmos (and of every other hylic to the cosmos, but by things interior [outward] to the exterior - such [things] as soul, or spirit, or some such other thing incorporeal. 'Tis not the body that doth move the living thing in it; nay, not even the whole [body of the universe a lesser] body e'en though there be no life in it.

(63) Timaeus: and the” above with the above, we shall discover that these all become and are opposite and oblique and in every way different in their mutual relations. There is, however, this one fact to be noticed about them all, that it is the passage of each kind to its kindred mass which makes the moving body heavy, and the region to which such a body moves “below”; while the opposite conditions produce the contrary results. Let this, then, stand as our account of the causes of these conditions. Of “smoothness” and “roughness” anyone might be able to discern the causes and explain them also to others. For the cause of the latter is hardness combined with irregularity, and of the former

(436) rather say that one part of him is in motion while another is at rest. Very true. And suppose the objector to refine still further, and to draw the nice distinction that not only parts of tops, but whole tops, when they spin round with their pegs fixed on the spot, are at rest and in motion at the same time (and he may say the same of anything which revolves in the same spot), his objection would not be admitted by us, because in such cases things are not at rest and in motion in the same parts of themselves; we should rather say that they have both an axis and a circumference, and that the axis stands still, for there is no deviation from the perpendicular; and that the circumference goes round. But if, while revolving, the axis inclines either to the right or left, forwards or backwards, then in no point of view can they be at rest. That is the correct mode of describing them, he replied. Then none of these objections will confuse us, or incline us to believe that the same thing at the same time, in the same part or in relation to the same thing, can act or be acted upon in contrary ways. Certainly not, according to my way of thinking. Yet, I said, that we may not be compelled to examine all such objections, and prove at length that they are untrue, let us assume their absurdity, and go forward on the understanding that hereafter, if this assumption turn out to be untrue, all the consequences which follow shall be withdrawn. Yes, he said, that will be the best way.

(58) Timaeus: and motion in non-uniformity; and the cause of the non-uniform nature lies in inequality. Now we have explained the origin of inequality ; but we have not declared how it is that these bodies are not separated according to their several Kinds, and cease not from their motion and passage one through another. Wherefore, we shall once more expound the matter as follows. The revolution of the All, since it comprehends the Kinds, compresses them all, seeing that it is circular and tends naturally to come together to itself ; and thus it suffers no void place to be left.

(11) For of objects that are moved, some are moved by impulse and appearance, as animals; and some by transposition, as inanimate objects. And of things without life, plants, they say, are moved by transposition in order to growth, if we will concede to them that plants are without life. To stones, then, belongs a permanent state. Plants have a nature; and the irrational animals possess impulse and perception, and likewise the two characteristics already specified.

(9) But what again, when the Theologians say, that the unmoved goes forth to all, and is moved? Must we not understand this in a sense befitting God? For we must reverently suppose that He is moved, not as beseems carriage, or change, or alteration, or turning, or local movement, or the straight, or the circular, or that from both (curvative), or the intellectual, or the spiritual, or the physical, but that Almighty God brings into being and sustains everything, and provides in every way for everything; and is present, to all, by the irresistible embrace of all, and by His providential progressions and operations to all existing things. But we must concede to our discourse, to celebrate in a sense becoming God, even movements of God, the immovable. And the straight must be considered (to be) the unswerving and the undeviating progression of the operation, and the production from Himself of the whole; and the curvative--the steady progression and the productive condition; and the circular the same, and the holding together the middle and extremities, which encompass and are encompassed,--and the turning to Him of the things which proceeded from Him.

(7) Hence, too, the errant spheres, being moved contrarily to the inerrant one, are moved by one another by mutual contrariety, [and also] by the spable one through contrariety itself. And this can otherwise not be. The Bears up there , which neither set nor rise, think'st thou they rest or move? A: They move, Thrice-greatest one. H: And what their motion, my Asclepius? A: Motion that turns for ever round the same. H: But revolution - motion around same - is fixed by rest. For "round-the-same" doth stop "beyond-same". "Beyond-same" then, being stopped, if it be steadied in "round-same" - the contrary stands firm, being rendered ever stable by its contrariety.

(4) At the end, likewise, of your inquiry, you introduce a distinction according to nature. For your question asks, “ How essences are known by energies, by physical motions, and by accidents? ” The very contrary, however, to all this takes place. For if energies and motions were constitutive of essences, they would be the lords of the difference which is between them. But if essences generate energies, the former being separate prior to the latter, will impart to motions, energies, and accidents, that by which they differ from each other. This, therefore, subsists contrarily to what you suppose, for the purpose of discovering the peculiarity which you now investigate.

(4) And if all things in motion desire, not repose, but ever to make known their own proper movement, even this is an aspiration after the Divine Peace of the whole, which preserves all things from falling away of their own accord, and guards the idiosyncrasy and moving life of all moving things unmoved and free from falling, so that the things moved, being at peace amongst themselves, and always in the same condition, perform their own proper functions.

(9) Further, there is a movement of soul, circular indeed,--the entrance into itself from things without, and the unified convolution of its intellectual powers, bequeathing to it inerrancy, as it were, in a sort of circle, and turning and collecting itself, from the many things without, first to itself, then, as having become single, uniting with the uniquely unified powers, and thus conducting to the Beautiful and Good, which is above all things being, and One and the Same, and without beginning and without end. But a soul is moved spirally, in so far as it is illuminated, as to the divine kinds of knowledge, in a manner proper to itself, not intuitively and at once, but logically and discursively; and, as it were, by mingled and relative operations; but in a straight line, when, not entering into itself, and being moved by unique intuition (for this, as I said, is the circular), but advancing to things around itself, and from things without, it is, as it were, conducted from certain symbols, varied and multiplied, to the simple and unified contemplations.

(64) Timaeus: bearing in mind the distinction we previously drew between mobile and immobile substances; for it is in this way that we must track down all those facts that we intend to grasp. Whenever what is naturally mobile is impressed by even a small affection, it transmits it in a circle, the particles passing on to one another this identical impression until they reach the organ of intelligence and announce the quality of the agent. But a substance of the opposite kind, being stable and having no circular movement, is only affected in itself and does not move any other adjacent particle; consequently,