Fervor is a fire that makes things boil and grow hot, just as fire causes water to boil. It is, properly speaking, charity on fire, and that is what you should have because a Daughter without Charity is like a body without a soul.
St. VincentThe Church of Christ, zealous and cautious guardian of the dogmas deposited with it, never changes any phase of them. It does not diminish them or add to them; it neither trims what seems necessary now grafts things superfluous . . . but it devotes all its diligence to one aim: To treat tradition faithfully and wisely; to consolidate and to strengthen what already was clear; and to guard what already was confirmed and defined.
St. Vincent