[112] By Diogenes Laertius, vi. 69, and Cicero, _De Offic._ i. 41. [113] Gen. i. 28. [114] Ps. cxxxviii. 3. [115] Gen. i. 27, 28. [116] Matt. xix. 4, 5. [117] Eph. v. 25. [118] Luke xx. 34. [119] See Virgil, _Georg._ iii. 136. [120] Rom. i. 26. [121] The position of Calama is described by Augustine as between Constantine and Hippo, but nearer Hippo.--_Contra Lit. Petil._ ii. 228. A full description of it is given in Poujoulat's _Histoire de S. Augustin_, i. 340, who says it was one of the most important towns of Numidia, eighteen leagues south of Hippo, and represented by the modern Ghelma. It is to its bishop, Possidius, we owe the contemporary _Life of Augustine_. [122] _Andr._ ii. 1, 5. [123] 1 Tim. i. 5. [124] Compare Basil's _Homily on Paradise_, and John Damascene, _De Fide Orthod._ ii. 11. [125] Ps. cxi. 2. [126] Ps. iii. 3. [127] Ps. xviii. 1. [128] Rom. i. 21-25. [129] 1 Cor. xv. 28. BOOK FIFTEENTH. ARGUMENT. HAVING TREATED IN THE FOUR PRECEDING BOOKS OF THE ORIGIN OF THE TWO CITIES, THE EARTHLY AND THE HEAVENLY, AUGUSTINE EXPLAINS THEIR GROWTH AND PROGRESS IN THE FOUR BOOKS WHICH FOLLOW; AND, IN ORDER TO DO SO, HE EXPLAINS THE CHIEF PASSAGES OF THE SACRED HISTORY WHICH BEAR UPON THIS SUBJECT. IN THIS FIFTEENTH BOOK HE OPENS THIS PART OF HIS WORK BY EXPLAINING THE EVENTS RECORDED IN GENESIS FROM THE TIME OF CAIN AND ABEL TO THE DELUGE. 1. _Of the two lines of the human race which from first to last divide it._