Therefore, continues the sacred historian, Sarah, the wife of Abraham, having taken Hagar, the Egyptian woman, her own handmaiden, ten years after Abraham had begun to

 Genesis xxviii. 7. 
 
dwell in the land of Canaan, gave her to Abraham her "husband, to be his wife." Genesis xvi. 3. Wickedness is by nature an envious, and bitter, and evil-disposed thing, but virtue is gentle, and inclined to communion, and friendly; wishing in every possible manner to benefit those who are well disposed, either by its own power or by the means of others. So now accordingly, as we are not able to become the fathers of children by prudence, she espouses us to her own handmaiden, encyclical instruction, as I have said before, and all but endures to be the bridesmaid and manager of the marriage; for it is said that Sarah herself took this woman and gave her to her own husband.
 And here it is worth while to raise the question why it is that now again Moses calls the wife of Abraham Sarah, when he had already repeatedly told us what her name was before; for he was not a writer who ever indulged in that worst description of prolixity, tautology. What, then, are we to say? Since she is about to betroth to him the handmaiden of wisdom, encyclical instruction, he says that she did not forget the duty which she owed to her mistress, but knew that she was, both in law and in her master’s feelings, his wife, and that she herself was only such because of necessity and the force of opportunity. And this happens to every man who is fond of learning. And he who has experienced it may be looked upon as the most trustworthy witness to this fact. At all events I, when I was first excited by the stimulus of philosophy to feel a desire for it, when I was very young connected myself with one of her handmaidens, namely, grammar; and all the offspring of which I became the father by her, such as writing, reading, and the acquaintance with the works of the poets and historians, I attributed to the mistress. And at a subsequent time, forming connection with another of her handmaidens, geometry, and admiring her beauty (for she had beautiful symmetry and proportions in all her parts), I still appropriated none of the offspring, but carried them to the citizen wife, and bestowed them on her.