Accordingly we say that there is no unchangeable good but the one, true, blessed God; that the things which He made are indeed good because from Him, yet mutable because made not out of Him, but out of nothing. Although, therefore, they are not the supreme good, for God is a greater good, yet those mutable things which can adhere to the immutable good, and so be blessed, are very good; for so completely is He their good, that without Him they cannot but be wretched. And the other created things in the universe are not better on this account, that they cannot be miserable. For no one would say that the other members of the body are superior to the eyes, because they cannot be blind. But as the sentient nature, even when it feels pain, is superior to the stony, which can feel none, so the rational nature, even when wretched, is more excellent than that which lacks reason or feeling, and can therefore experience no misery. And since this is so, then in this nature which has been created so excellent, that though it be mutable itself, it can yet secure its blessedness by adhering to the immutable good, the supreme God; and since it is not satisfied unless it be perfectly blessed, and cannot be thus blessed save in God,—in this nature, I say, not to adhere to God, is manifestly a fault. Now every fault injures the nature, and is consequently contrary to the nature. The creature, therefore, which cleaves to God, differs from those who do not, not by nature, but by fault; and yet by this very fault the nature itself is proved to be very noble and admirable. For that nature is certainly praised, the fault of which is justly blamed. For we justly blame the fault because it mars the praiseworthy nature. As, then, when we say that blindness is a defect of the eyes, we prove that sight belongs to the nature of the eyes; and when we say that deafness is a defect of the ears, hearing is thereby proved to belong to their nature;—so, when we say that it is a fault of the angelic creature that it does not cleave to God, we hereby most plainly declare that it pertained to its nature to cleave to God. And who can worthily conceive or express how great a glory that is, to cleave to God, so as to live to Him, to draw wisdom from Him, to delight in Him, and to enjoy this so great good, without death, error, or grief? And thus, since every vice is an injury of the nature, that very vice of the wicked angels, their departure from God, is sufficient proof that God created their nature so good, that it is an injury to it not to be with God.