Chapter 1 — Preface to the Roman Catechism
Section 18. This, assuredly, is that more excellent way pointed out by the Apostle when he sums up all his doctrines and instructions in charity, which never falleth away. For whatever is proposed by the pastor, whether it be the exercise of faith, of hope, or of some moral virtue, the love of our Lord should at the same time be so strongly insisted upon as to show clearly that all the works of perfect Christian virtue can have no other origin, no other end than divine love.