Once, when he was strolling in a solitary place beyond the city and pondering about where to seek the way to the knowledge of Truth, he met an old man. In the ensuing conversation he revealed to Justin the essential nature of the Christian teaching and advised him to seek the answers to all the questions of life in the books of Holy Scripture. "But before anything else," said the holy Elder, "pray diligently to God, so that He might open to you the doors of Light. No one is able to comprehend Truth, unless he is granted understanding from God Himself, Who reveals it to each one who seeks Him in prayer and in love."
St. Justin, apologist and martyr, was one of the most important Christian writers of the second century. He himself tells how his study of all the schools of philosophy led him to Christianity, and how he dedicated his life to the defense of the Christian faith as "the one certain and profitable philosophy."
St. Justin is particularly celebrated for the two Apologies which he was courageous enough to address in succession to the persecuting emperors Antoninus and Marcus Aurelius. One of them contains a description of the rites of baptism and the ceremonies of Mass, thus constituting the most valuable evidence that we possess on the Roman liturgy of his day. He was beheaded in Rome in 165. Justin is also referred to as "the Philosopher."
(Courtesy of CatholicCuluture.com)