[a.d. 110–165.] Justin was a Gentile, but born in Samaria, near Jacob’s well. He must have been well educated: he had travelled extensively, and he seems to have been a person enjoying at least a competence. After trying all other systems, his elevated tastes and refined perceptions made him a disciple of Socrates and Plato. So he climbed towards Christ. As he himself narrates the story of his conversion, it need not be anticipated here. What Plato was feeling after, he found in Jesus of Nazareth. The conversion of such a man marks a new era in the gospel history. The sub-apostolic age begins with the first Christian author,—the founder of theological literature. It introduced to mankind, as the mother of true philosophy, the despised teaching of those Galileans to whom their Master had said, “Ye are the light of the world.”