This other principle is celebrated under the name of homœomeries (_ὁμοιομερῆ_), of like parts or homogeneous, in Aristotle’s rendering (Met. I. 3, 7); Riemer translates _ἡ ὁμοιομερεια_ “the similarity of individual parts to the whole,” and _αἱ ὁμοιομέρειαι_ “the elementary matter,” yet this latter word seems to be of a later origin.[84] Aristotle says, “Anaxagoras sets forth” (in respect of the material) “infinitely many principles, for he maintained that, like water and fire in Empedocles’ system, nearly all that is formed of like parts only arises from union and passes away through separation; other arising and passing away there is none, for equal parts remain eternal.” That is, the existent, the individual matter, such as bones, metal, flesh, &c., in itself consists of parts like itself—flesh of small particles of flesh, gold of small gold particles, &c. Thus he said at the beginning of his work, “All has been alike” (i.e. unseparated as in a chaos), “and has rested for an infinitude of time; then came the _νοῦς_, and it brought in movement, separated and brought order into the separated creation (_διεκόσμησεν_), in that it united the like.”[85] The homœomeriæ become clearer if we compare them with the conceptions of Leucippus and Democritus and others. In Leucippus and Democritus, as well as Empedocles, we saw this matter, or the absolute as objective existence, determined so that simple atoms—with the latter the four elements and with the former infinitely many—were set forth as separate only in form; their syntheses and combinations were existing things. Aristotle (De cœlo, III. 3) says further on this point, “Anaxagoras asserts of the elements the opposite to Empedocles. For the latter takes as original principles, fire, air, earth, and water, through whose union all things arise. On the other hand, Anaxagoras maintains what are of like parts such as flesh, bones, or the like to be simple materials; such things as water and fire, on the contrary, are a mixture of the original elements. For any one of these four consists of the infinite admixture of all invisible, existing things of like parts, which hence come forth from these.” The principle held good for him as for the Eleatics, that “the like only comes out of the like; there is no transition into the opposite, no union of opposites possible.” All change is hence to him only a separation and union of the like; change as true change, would be a Becoming out of the negative of itself. “That is, because Anaxagoras,” says Aristotle (Phys. I, 4), “partook of the view of all physicists that it is impossible that anything can come out of nothing, there was nothing left but to admit that what becomes was already present as an existent, but that, on account of its small size, it was imperceptible to us.” This point of view is also quite different from the conception of Thales and Heraclitus, in which, not only the possibility, but