The First Apology, The Second Apology, Dialogue with Trypho, Exhortation to the Greeks, Discourse to the Greeks, The Monarchy of the Rule of God

St. Justin Martyr is known as the outstanding apologist of the second century. While the Apostolic Fathers like St. Clement of Rome, and St. Ignatius of Antioch had addressed members within the Christian fold, St. Justin is considered to be the first prominent defender of the Christian faith against non-Christians and the enemies of the Church.