[Footnote 30: Plato, Timæus, p. 34 A. [Greek: e)pi\ de\ tê\n peri/odon tau/tên, a(/t' ou)de\n podô=n de/on, a)skele\s kai\ a)/poun au)to\ e)ge/nnêsen.] Plato reckons six varieties of rectilinear motion, neither of which was assigned to the Kosmos--forward, backward, upward, downward, to the right, to the left.] [Footnote 31: Plat. Tim. p. 34 A. [Greek: ki/nêsin ga\r a)pe/neimen au)tô=| tê\n tou= sô/matos oi)kei/an, tô=n e(/pta tê\n peri\ nou=n kai\ phro/nêsin ma/lista ou)/san.] This predicate respecting circular motion belongs to Plato and not to Aristotle; but Aristotle makes out, in his own way, a strong case to show that circular motion _must belong_ to the [Greek: Prô=ton sô=ma], as being the first among all varieties of motion, the most dignified and privileged, the only one which can be for ever uniform and continuous. Aristot. Physic. ix. p. 265, a. 15; De Coelo, i. pp. 269-270, ii. p. 284, a. 10.] [Side-note: Soul of the Kosmos--its component ingredients--stretched from centre to circumference.] The Kosmos, one and only-begotten, was thus perfect as to its body, including all existent bodily material,--smooth, even, round, and equidistant from its centre to all points of the circumference.[32] The Demiurgus put together at the same time its soul or mind; which he planted in the centre and stretched throughout its body in every direction,--so as not only to reach the circumference, but also to enclose and wrap it round externally. The soul, being intended to guide and govern the body, was formed of appropriate ingredients, three distinct ingredients mixed together: 1. The Same--The Identical--The indivisible, and unchangeable essence of Ideas. 2. The Different--The Plural--The divisible essence of bodies or of the elements. 3. A third compound, formed of both these ingredients melted into one.--These three ingredients--Same, Different, Same and Different in one,--were blended together in one compound, to form the soul of the Kosmos: though the Different was found intractable and hard to conciliate.[33] The mixture was divided, and the portions blended together, according to a scale of harmonic numerical proportion complicated and difficult to follow.[34] The soul of the Kosmos was thus harmonically constituted. Among its constituent elements, the Same, or Identity, is placed in an even and undivided rotation of the outer or sidereal sphere of the Kosmos,--while the Different, or Diversity, is distributed among the rotations, all oblique, of the seven interior or planetary spheres--that is, the five planets, Sun, and Moon. The outer sphere revolved towards the right: the interior spheres in an opposite direction towards the left. The rotatory force of the Same (of the outer Sphere) being not only one and undivided, but connected with and dependent upon the solid revolving axis which traverses the diameter of the Kosmos--is far greater than that of the divided spheres of the Different; which, while striving to revolve in an opposite