Catechism of the Catholic Church §196 — excerpt
Our presentation of the faith will follow the Apostles' Creed, which constitutes, as it were, "the oldest Roman catechism". the presentation will be completed however by constant references to the Nicene Creed, which is often more explicit and more detailed.
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.