FIRE, THOUGH AN APPARENT EXCEPTION, STILL CONFORMS TO THIS PROCEDURE.
For example, fire (as the principal element of the heaven), is both lively and swift, and cannot remain in the inferior regions, any more than the earth can abide in the superior regions. When it has reached these regions where it is to remain, it becomes established in the most suitable place. But even so, like all other bodies, it still seeks to extend in all directions. However, it cannot ascend, since there is no place higher than the one it occupies; nor can it descend, because of the opposition of its own nature. The only thing left for it to do is to yield to the guidance and natural impulsion of the life-imparting universal Soul, that is, to move into the most beautiful place, in the universal Soul. Its falling from here is prevented by the universal Soul's circular movement which dominates and supports it, as well as by its innate indisposition to descend, so that its continuance in the higher regions is unopposed. (The fire has no similarity with) the constitutive parts of our body which are forced to derive their suitable form from elsewhere. If unaided, they are not even capable of preserving their organization. Merely to subsist, they are forced to borrow parts from other objects. The case is entirely different with the fire of the heaven, which needs no food because it loses nothing. If indeed it allowed anything to escape, we might indeed be forced to state that when in the heaven a fire is extinguished, a substitute must be lit. But in such a case the universal living Organism would no more remain identical.
THE IMMORTALITY OF THE HEAVEN IS DUE TO RESIDENCE THERE OF THE UNIVERSAL SOUL.
4. Apart from the exigencies of our argument, it may be interesting to consider whether there be any wastage off from heaven, so as to create a need of being (replenished or) fed, so to speak; or whether all its contents, being once for all established, subsist there naturally, without allowing any of their substance to escape. In the latter case we would be driven further to inquire whether the heaven be composed of fire exclusively or principally[213]; and whether, while dominating the other elements, the fire engages them in its course. Were we to associate (with fire) the Soul, which is the most powerful of all causes, so as to unite her with elements so pure and excellent (just as, in other animals, the soul chooses the best parts of the body as dwelling-place), we would have produced a solid argument for the immortality of the heaven. Aristotle indeed says that the flame surges, and that the fire devours everything with an insatiable avidity[206]; but he was evidently speaking only of the terrestrial fire, for the celestial fire is calm, immovable, and in harmony with the nature of the stars.
THE HEAVEN'S IMMORTALITY ALSO DUE TO THE UNIVERSAL SOUL'S SPONTANEOUS MOTION.
A still more important reason for the immortality of the heaven is that the universal Soul, moving with remarkable spontaneity, immediately succeeds the most perfect principles (such as the Good, and Intelligence). She could not therefore allow the annihilation of anything which had once been posited within her. Ignorance of the cause that contains the universe could alone permit denial that the universal Soul which emanates from the divinity excels all other bonds in strength. It is absurd to believe that after having contained something during a certain period, she could ever cease doing so. This would imply that she had done so till now by some violence; which would again infer the existence of some plan more natural than the actual state, and actual admirable disposition of beings within the very constitution of the universe; which would lastly suggest a force capable of destroying the organization of the universe, and of undermining the sovereignty of the governing Soul.
THE IMMORTALITY OF THE HEAVEN PROVED BY ITS NEVER HAVING HAD TO BEGIN.
We have elsewhere[207] shown that it would be absurd to suppose that the world ever had a beginning. This however implies that it will never cease to exist. Why indeed should it not continue to do so? Its component elements are not, like wood, and similar things, exposed to wastage. Their continued subsistence, however, implies that the universe that they form must also ever subsist. On the other hand, even if they were subject to a perpetual change, the universe must still subsist because the principle of this change subsists continually. Moreover, it has elsewhere been shown[224] that the universal Soul is not subject to repentance, because she governs the universe without difficulties or fatigue, and that even in the impossible case that the body of the universe should happen to perish, she would not thereby be altered.
WHY CELESTIAL THINGS LAST LONGER THAN TERRESTRIAL ONES.
5. The reason why celestial things endure beyond terrestrial animals and elements has been thus stated by Plato[225]: "Divine animals were formed by the divinity Himself, while the animals here below were formed by the divinities, His offspring." What the divinity (Himself) does could not possibly perish. This implies the existence, below the demiurge (Intelligence), of the celestial Soul, with our souls.[208] From the celestial Soul derives and flows an apparent-form-of-an-image,[209] which forms terrestrial animals. This inferior soul imitates her intelligible principle (the celestial Soul), without, however, being able to resemble her completely—because she employs elements which are less good (than the celestial elements); because the place where she operates with them is less good (than heaven)—and because the materials that she organizes could not remain united. Consequently, terrestrial animals could not last for ever. For the same reason this soul does not dominate terrestrial bodies with as much power (as the celestial Soul dominates celestial things), because each of them is governed by another (human) soul.