2738. Mutual love, such as there is in heaven, is not like conjugial love. Conjugial love consists in desiring to be in the other's life as a one; but mutual love consists in wishing better to another than to one's self, as is the case with the love of parents toward their children, and as is the love of those who are in the love of doing good, not for their own sake, but because this is a joy to them. Such angelic love is derived from conjugial love, and is born from it as a child from its parent; and for this reason it exists with parents toward their children. This love is preserved by the Lord with parents, even if they are not in conjugial love, in order that the human race may not perish.