Much progress is not, however, made with these number-relations, for they do not present much to the speculative Notion. The relationships and laws of nature cannot be expressed by these barren numbers; they form an empirical relation which does not constitute the basis of the proportions of nature. Plato now says: “God divided this entire series lengthways into two parts which he set together crosswise like an X, and he bent their ends into a circular form and comprehended them in a uniform motion—forming an inner circle and an outer—and he called the motion of the outer circle the motion of the same, and that of the inner the motion of the diverse, giving supremacy to the former, and leaving it intact. But the inner motion he again split into seven orbits after the same relations; three of these he made to move with equal velocity, and four with unequal velocity to the three and to one another. This is the system of the soul within which all that is corporeal is formed; the soul is the centre, it penetrates the whole and envelopes it from without and moves in itself. Thus it has the divine beginning of a never-ceasing and rational life in itself.”[53] This is not quite devoid of confusion, and from it we can only grasp the general fact that as to Plato with the idea of the corporeal universe that of the soul enters in as the all-embracing and simple, to him the essence of the corporeal and of the soul is unity in difference. This double essence, posited in and for itself in difference, becomes systematized within the one in many moments, which are, however, movements; thus this reality and that essence both pertain to this whole in the antithesis of soul and body, and this again is one. Mind is what penetrates all, and to it the corporeal is opposed as truly as that it itself is mind.