We must mention another fruitful cause of evil by which the Church is afflicted at present, namely: Indifferentism, that vicious manner of thinking which mushrooms on all sides owing to the wiles of malicious men, and which holds that the eternal salvation of the soul can be obtained by the profession of any faith, provided a man's morals be good and decent ... Let them beware who preach that the gates of Heaven are open to every religion! Let them seriously consider the testimony of the Savior that some are against Christ because they they are not with Christ, that they scatter who do not gather with Him, and therefore without doubt they will perish in eternity unless they hold to the Catholic faith and observe it whole and inviolate. --Pope Gregory XVI
