St. Justin, a converted philosopher, and probably priest, is the greatest of the early Apolgetes. Before arriving at the sublime knowledge of the Cross he passed through all the various schools of philosophy. He fearlessly proclaimed Christianity, both in argument with the Jew Trypho and in his Apologies to the Emperors and the Senate.
As in the writings of St. Justin, so in his Mass said today, the antithesis between human learning and divine knowledge is ever recurring. Thus in the Gradual we read “The wisdom of this world is foolishness with God” (I Cor.iii, 19). Under the Emperor Marcus Aurelius he was scourged and put to death April 13, 162. His tomb is believed to be in the Cemetery of Priscilla, and in 1882, Pope Leo XII made him after Thomas Aquinas, Patron of Catholic Philosophy, and prescribed the celebration of his feast throughout the whole Church.