Enneads III.6: Of the Impassibility of Incorporeal Entities (Soul and and Matter)
The Myth of Poverty and Abundance
14. What! Would nothing exist (in the sense-world) if matter did not exist? Nothing! It is as with a mirror; remove it, and the images disappear. Indeed, that which by its nature is destined to exist in something else could not exist in that thing; now the nature of every image is to exist in something else. If the image were an emanation of the causes themselves, it could exist without being in anything else; but as these causes reside in themselves, so that their image may reflect itself elsewhere, there must be something else destined to serve as location for that which does not really enter into it; something which by its presence, its audacity, its solicitations, and by its indigence, should as it were forcibly obtain (what it desires), but which is deceived because it does not really obtain anything; so that it preserves its indigence, and continues to solicitate (satisfaction[72]). As soon as Poverty exists, it ceaselessly "begs," as a (well-known Platonic) myth tells us;[97] that shows clearly enough that it is naturally denuded of all good. It does not ask to obtain all that the giver possesses; it is satisfied with the possession of some of it, thus revealing to us how much the images that appear in matter are different from real beings. Even the very name of Poverty, which is given to matter, indicates that it is insatiable. When Poverty is said to unite with Abundance, we do not mean that it unites with Existence or Fulness, but with a work of wonderful skill, namely, a thing that is nothing but specious appearance.[74],[98]
THE MIRACLE IS THAT MATTER PARTICIPATES IN EXISTENCE WITHOUT PARTICIPATING IN IT.
It is indeed impossible that that which is outside of existence should be completely deprived of it; for the nature of existence is to produce beings. On the other hand, absolute nonentity cannot mingle with existence. The result is something miraculous: matter participates in existence without really participating in it, and by approaching to it obtains something, though by its nature matter cannot unite with existence. It therefore reflects what it receives from an alien nature as echo reflects sound in places that are symmetrical and continuous. That is how things that do not reside in matter seem to reside in it, and to come from it.