"To be a member of the Church of Christ is no longer necessary, since, if we lead a good moral life, we are in the state of salvation, whether we belong to her or not! What a wide field does this give to the passions of men! What liberty to all the whims of the human mind! It is therefore of the utmost consequence to state and to show plainly the revealed Catholic truth that 'there is no salvation out of the Catholic Church.'" It must be remembered that every Catholic dogma is a revealed truth that has always been held by the Fathers of the Church from the beginning and must, therefore, be interpreted, not according to modern opinions and latitudinarian principles, but according to the faith of the Fathers and Doctors of the Church; and therefore Vincent of Lerins says: "A true Catholic is he who loves the truth revealed by God, who loves the Church, the Body of Christ, who esteems religion, the Catholic faith, higher than any human authority, talents, eloquence, and philosophy; all this he holds in contempt, and remains firm and unshaken in the faith which, he knows, has always from the beginning been held by the Catholic Church; and if he notices that any one, no, matter who he may be, interprets a dogma in a manner different from that of the Fathers of the Church, he understands that God permits such an interpretation to be made, not for the good of religion, but as a temptation, according to the words of St. Paul: 'For there must be also heresies; that they also, who are reproved, may be made manifest among you.' (I Cor. 11:19) 'And indeed, no sooner are novel opinions proclaimed, than it becomes manifest what kind of a Catholic a man is: ' (Commonit.) Hence, as St. Augustine says, 'a theologian who is humble, will never teach anything as true Catholic doctrine, unless he is perfectly certain of the truth which he asserts, and proves it from Holy Scripture and the Tradition of the Church.' Those who have learned theology well, ' says St. Basil, will not allow one iota of Catholic dogmas to be betrayed. They will, if necessary, willingly undergo any kind of death in their defence.