The nature of number, therefore, pervades from on high, as far as to the last of things, adorning all things, and connecting them by appropriate forms. For how could a perfect number comprehend the period of the whole world, as the Muses in Plato assert that it does? Or how could numbers, some of which are productive of fertility, and others of sterility, comprehend the descents of souls? Or how could some of them define the ascents of souls in less, but others in greater periods, as Socrates says in the Phædrus, where he delivers to us restitutions consisting of three thousand and ten thousand years? Or how could time itself which is unically comprehensive of the psychical measures, proceed according to number, as Timæus says it does, unless divine number exists prior to all these, which imparts to all things a principal cause of order according to numbers? Since all things therefore subsist through numbers and forms, numbers are allotted a progression from the intellectual summit. But forms have their generation from intelligible[240] forms. For forms subsist primarily in the third triad of intelligibles. But numbers are primarily in the first triad of intellectuals; since also in the effects of these, every number indeed is form, but not every form is number. If, however, it be requisite clearly to unfold the truth, numbers are also prior to forms. For there are indeed superessential numbers, but there are not superessential forms. And according to this reasoning every form is number, as also the Pythagoreans said. For Timæus being a Pythagorean, not only asserts that there are intelligible forms, but also intelligible numbers; for he says that the intelligible forms are four. There however, number is intelligibly, and monadically according to cause. For intelligible animal is a monad, occultly containing the whole of number. But in the summit of intellectuals, number subsists separately, evolving the number which preexists in the monad according to cause and uniformly. For there is a difference, I think, between saying multitude in its cause, and multitude from its cause, and between saying united, and saying separated multitude. And the one indeed is prior to number, but the other is number. So that according to Timæus there are intelligible numbers together with forms, and prior to forms. And according to Parmenides, number is after multitude. For Timæus calls uniform and occult multitude the number of forms. But since number is primarily in the Gods, but forms participate of the divine unities, he denominates the first ideas four. For monad and triad, were primarily indeed in the Gods themselves, but secondarily in intellectuals; and superessentially indeed in the former, but formally in the latter. In intelligibles therefore, multitude was unically; but in intellectuals it subsists separately. But where there is separation there also there is number, as we have frequently observed. Hence