But if the Creator is truly loved, that is, if He Himself is loved and not another thing in His stead, He cannot be evilly loved; for love itself is to be ordinately loved, because we do well to love that which, when we love it, makes us live well and virtuously. So that it seems to me that it is a brief but true definition of virtue to say, it is the order of love; and on this account, in the Canticles, the bride of Christ, the city of God, sings, "Order love within me."[204] It was the order of this love, then, this charity or attachment, which the sons of God disturbed when they forsook God, and were enamoured of the daughters of men.[205] And by these two names (sons of God and daughters of men) the two cities are sufficiently distinguished. For though the former were by nature children of men, they had come into possession of another name by grace. For in the same Scripture in which the sons of God are said to have loved the daughters of men, they are also called angels of God; whence many suppose that they were not men but angels. 23. _Whether we are to believe that angels, who are of a spiritual substance, fell in love with the beauty of women, and sought them in marriage, and that from this connection giants were born._ In the third book of this work (c. 5) we made a passing reference to this question, but did not decide whether angels, inasmuch as they are spirits, could have bodily intercourse with women. For it is written, "Who maketh His angels spirits,"[206] that is, He makes those who are by nature spirits His angels by appointing them to the duty of bearing His messages. For the Greek word ἄγγελος, which in Latin appears as "angelus," means a messenger. But whether the Psalmist speaks of their bodies when he adds, "and His ministers a flaming fire," or means that God's ministers ought to blaze with love as with a spiritual fire, is doubtful. However, the same trustworthy Scripture testifies that angels have appeared to men in such bodies as could not only be seen, but also touched. There is, too, a very general rumour, which many have verified by their own experience, or which trustworthy persons who have heard the experience of others corroborate, that sylvans and fauns, who are commonly called "incubi," had often made wicked assaults upon women, and satisfied their lust upon them; and that certain devils, called Duses by the Gauls, are constantly attempting and effecting this impurity is so generally affirmed, that it were impudent to deny it.[207] From these assertions, indeed, I dare not determine whether there be some spirits embodied in an aerial substance (for this element, even when agitated by a fan, is sensibly felt by the body), and who are capable of lust and of mingling sensibly with women; but certainly I could by no means believe that God's holy angels could at that time have so fallen, nor can I think that it is of them the Apostle Peter said,