Pg. 634 - 635 The History of Heresies, and Their Refutation:The devil always strives to deceive heretics, by suggesting to them that they can be saved in their belief. This was what Theodore Beza said to St. Francis de Sales, when hard pressed by him on the importance of salvation: "I hope to be saved in my own religion." Unhappy hope! which only keeps them in error here, and exposes them to eternal perdition hereafter, when the error cannot be remedied. I think the danger of eternal perdition, by dying separated from the Church, should be a sufficient motive to convert every heretic. It was this that made Henry IV. forsake Calvinism, and become a Catholic. He assembled a conference of Catholics and Calvinists, and after listening for a time to their arguments, he asked the Calvinistic doctors if it was possible a person could be saved in the Catholic faith; they answered that it was; "Then," said the King, " if the faith of the Roman Church secures salvation, and the Reformed faith is at least doubtful, I will take the safe side and become a Catholic."
All the misfortunes of unbelievers spring from too great an attachment to the things of this life. This sickness of heart weakens and darkens the understanding, and leads many to eternal ruin. If they would try to heal their hearts by purging them of their vices, they would soon receive light, which would show them the necessity of joining the Catholic Church, where alone is salvation. My dear Catholics, let us thank the Divine goodness, who, among so many infidels and heretics, has given us the grace to be born and live in the bosom of the Holy Roman Catholic Church, and let us take heed and not be ungrateful for so great a benefit. Let us take care and correspond to the Divine grace, for if we should be lost (which God forbid), this very benefit of grace conferred on us would be one of our greatest torments in hell.