Catholic Church is only true church

"The Catholic Church is the only fortress impregnable; the wise man to her will have his recourse, and shall be saved. She is the strong fort of the city of God, founded upon the rock, which cannot be undermined: fortified by the invincible force of the Holy Ghost, guarded by heavenly armies, which are camped round about compassed all sides with the favour of the Almighty. She is the earthly Paradise, where the tree of life is planted, which all of her house may freely use, and thereby receive nourishment of life everlasting. She is the true house of God, where He doth dispose His graces, and all His goodness and the sovereign felicity. And whoever can taste of the fruit of the name Catholic: he shall find himself happy, and shall perceive that he is a Catholic, he is, as it were, weeded out of himself to be transplanted in God: and being lost in himself, he shall find himself grafted, and rooted in God, in whom he shall stand more surely, more lively, more happily, and be more his own man, than standing in himself: where upon his shoul shall be filled with true...divine and everlasting joy."

from The Firme Foundation of the Catholic Religion by Jean de Caumont