Let no Christian therefore, whether philosopher or theologian, embrace eagerly and lightly whatever novelty happens to be thought up from day to day, but rather let him weigh it with painstaking care and a balanced judgment, lest he lose or corrupt the truth he already has, with grave danger and damage to his faith.
Pope Pius XIIThese principles have been proclaimed by God, by the Church, by the Saints, by Christian reason and morals.
Pope Pius XIIIt is absolutely necessary that the Christian community be subject in all things to the Sovereign Pontiff if it wishes to be a part of the divinely-established society founded by our Redeemer.
Pope Pius XIIBut the knowledge and love of our Divine Redeemer, of which we were the object from the first moment of His Incarnation, exceed all that the human intellect can hope to grasp. For hardly was He conceived in the womb of the Mother of God, when He began to enjoy the Beatific Vision, and in that vision all the members of His Mystical Body were continually and unceasingly present to Him, and He embraced them with His redeeming love
Pope Pius XII