The Catechism of the Council of Trent (with Supplemental Reading: Catholic Prayers)

This enduring catechism, compiled under the supervision of St. Charles Borromeo and approved by Pope St. Pius V, presents the doctrinal and moral teachings of the Catholic Church with rich theological precision and clarity. Widely esteemed by popes and theologians for centuries, it has served clergy and laity alike as a steady guide to the truths of the Faith during times of doctrinal confusion.