The Papacy Summary St. Peter Brief Biography of St. Peter Basic Catholic Teaching on St. Peter and the Papacy The Papacy and the Primacy of Peter Continuation of the Primacy in the Papal Succession The Nature of Papal Primacy Apologetics The Primacy of St. Peter in Scripture Papal Infallibility Reflection Pope John Paul II: The Magisterium Exercises Authority in Christ's Name Excerpts from Church Documents Vatican I's Dogmatic Constitution Pastor aeternus, on the Church of Christ) Leo XIII's Satis cognitum (On the Unity of the Church) John Paul II's Ut unum sint ("That They May Be One")