According to these hypotheses Anaxagoras conceives of the world's primal existence: perhaps as similar to a dust-like mass of infinitely small, concrete particles of which every one is specifically simple and possesses one quality only, yet so arranged that every specific quality is represented in an infinite number of individual particles. Such particles Aristotle has called _Homoiomere_ in consideration of the fact that they are the Parts, all equal one to another, of a Whole which is homogeneous with its Parts. One would however commit a serious mistake to equate this primal pell-mell of all such particles, such "seed-grains of things" to the one primal matter of Anaximander; for the latter's primal matter called the "Indefinite" is a thoroughly coherent and peculiar mass, the former's primal pell-mell is an aggregate of substances. It is true one can assert about this Aggregate of Substances exactly the same as about the Indefinite of Anaximander, as Aristotle does: it could be neither white nor grey, nor black, nor of any other colour; it was tasteless, scentless, and altogether as a Whole defined neither quantitatively nor qualitatively: so far goes the similarity of the Anaximandrian Indefinite and the Anaxagorean Primal Mixture. But disregarding this negative equality they distinguish themselves one from another positively by the latter being a compound, the former a unity. Anaxagoras had by the assumption of his Chaos at least so much to his advantage, that he was not compelled to deduce the Many from the One, the Becoming out of the "Existent."