I don’t see how the fact that your Church has stood for so long proves its truth. Other religions have stood longer, and have perished.

The mere fact that the Catholic Church has stood for so long does not prove its truth. The fact considered in the light of her teachings, moral obligations, and obstacles does. Indefectibility can be claimed as a proof for the Catholic Church alone. She demands humility, mortification, rigid duty, and subjection to God— things human nature dislikes. Protestantism abolished most of the things difficult for human nature, and is content with a more or less sentimental religion. Nor has any pagan religion demanded the consistent virtue demanded by the Catholic Church. Finally, reasons can be found for the life of non-Catholic religions, and for their death. But no natural reasons can be found for the continued vitality of the Catholic Church despite her difficult doctrines, and her enemies within and without. The protection of God alone accounts for her persistence.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty