De Plantatione

And the statement that "the Paradise was in the east," is a proof of what has been here said. For folly is a thing of darkness and setting, and which brings on the night; but wisdom is a most brilliant thing, radiant all around, and in the truest sense of the word, rising. And, as the sun, when it arises, fills the whole circle of the heaven with its light, so in the same manner, when the beams of virtue shine forth, they made the whole place occupied by the mind full of pure light.

Therefore the possessions of man have guards and keepers, very fierce beasts, for the repulse of invading and attacking enemies. But the possessions of God have rational natures for their guards. For "there," says Moses, "God placed the man whom he had made;" that is to say, he placed him among the rational virtues alone;