Catechism of the Catholic Church §10 — excerpt
It is therefore no surprise that catechesis in the Church has again attracted attention in the wake of the Second Vatican Council, which Pope Paul Vl considered the great catechism of modern times.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.
Also cites: Extraordinary Synod of Bishops 1985,. Final Report II B a, 4 · John Paul II, Discourse at the Closing of the Extraordinary Synod of Bishops 7 December 1985: AAS 78, (1986)