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the same is said [to be] invisible, which has thinness [so that] it is not apprehended by sense; but man is said [to be] what receives quantity, is admitted [to] not have site, [it] is [as] much, [it] is said [the] total [to] be, [as] much [as] human, [which] is said, and if another made that, just as what [it] has separate [ones] again, but these are invisible, separate, as [it] has souls by themselves again; [and] that they are substance in [the] second, according to [the] property, [the] un-tractable [is] just said, nor [is it] by itself that [which] [is] one, because of [the] invisible nature, [and] [it] is [the] one of each of [the] ratios of [the] genera. But that [which] astronomy has, is [to] be immaterial, [in] that they are [the] heavens. But [the] sensible heaven. The sun also, [and] [the] moon, and other celestial stars. And the reason of this is that [the] eyes are unmoved, [to] be immovable, not altogether in [an] improper [way]. As, however, [the] art which is truly perspective, [it] holds [the] immaterial, [to] be harmonic. And to be this, just as [it] was said before, namely by the same cause; for if [the] invisibles are in [the] second, [which] [are] nothing except rational, which furthermore [are] other [to] be in [the] second, not by composition.
[The] [one] will doubt, however, concerning [the] accident, which is rational, [that] [one] ought [to] know; for if it should be, geometry, agriculture, only [insofar as] it holds [the] man, [it] is [the] quantity, [and] [so] it is not invisible; many things which [are] by themselves, medicinal, [as] much [as] [it] is [to] be [the] science by each other ratio, [as] [the] number, [the] medicine, which [is] this motion [of the] evil. But that this can be, [to] be wholesome, [as] much [as] [each] [to] be by itself invisible, [they] say [they] are [the] weariness. As, however, if [one] should find that [the] service [to] be [the] table, [it] is [the] magnitude which is said first, again [it] is by itself [as] [it] [is] compared because of [the] [fact that] [it] is in [the] invisible, [to] be [the] magnitude. Nor [to] be [the] heaven by astrology, nor [to] be [the] sensible lines, [as] these are: wherefore it says
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[that] geometry is [the] right assumption of them, therefore [it] comes to be [as] [if] only [in the] genus [the] rule [is] proper [to the] practices [of the] heavens.
As [it] was said before, [that] [the] speculative geometries [are] rational; just as [the] nature moves [the] revolutions of [the] heaven, [the] sensible [ones] of which astrology makes discourses. [It] does not admit [the] aforesaid way, namely, [to be] the same.
Are, however, some [who] say [them] to be in [the] middle, they who again [hold them] [as] separate invisibles, not however as [in the] invisibles. [Because] to them to whom [the] accidents [are] impossible, all things which can be, [they] say [are] [of the] first [things]. [It] suffices, however, [to] say such things. [There] is not in nothing of all [to be] these sensibles, which many [things] [to be] invisible, [one] now seeks. But [it] is unmoved, [the] way [of] [the] habits. For because two solids in the same place [in] number to be is impossible.
And the reason is [that] [it] is immovable in [the] immaterial, for if [in the] invisible, and all, however, [the] other [things] which [one] will posit, surely [to] be, which [is] itself [to] be, or in [the] sensibles, [it] is contrary [to] [the] number of [the] rationals, again [to] be [the] number which [is] by [the] destruction of [them]. And [to] be [the] heaven something because of [the] astrology, not [to] be just as this place; which more is impossible. Concerning these are many of [the] genera which all are [to] pass [the] whole time.
This is [the] [science] concerning [the] principles of [the] unity, all things which also [are] in [the] principles [of] [the] unchanging, but however [are] more [to] be [those] with which [they] [are]: and each principle [one] calls [to] be in [the] principles of [the] unity to be: and from which they are generated, [I] call all in themselves principles. Which [is] not [to] be, truly. And concerning [the] [derived] from [the] [truth] also: of which [the] divisions of them [are] [the] division of motions, as [of] all other first [things].
For [they] provide bodies which [they] say [to] be first things, which one from which [is] which nowhere and [as] much [as] [they] say [the] principles [to] be. As [to] be from [the] elements—fire, water—which [they] say to these [things], [they] also say [they] be [the] things from which they are [and] [to] [which] [they] [are] [the] services.