The Larger Catechism of Saint Pius X is an official Catholic catechism of the Catholic Church, published in 1908 by order of Pope Saint Pius X. It was written to be used as a guide for the religious instruction of Catholics, including children, youth and adults. The catechism covers a variety of tolerations, including the doctrine, morals, sacraments, and liturgy of the Catholic Church. It also includes prayers and liturgical chants. The aim of the catechism is to help Catholics understand and practice their faith more fully and deeply.