Catechism of the Catholic Church §1696 — excerpt
The way of Christ "leads to life"; a contrary way "leads to destruction." The Gospel parable of the two ways remains ever present in the catechesis of the Church; it shows the importance of moral decisions for our salvation: "There are two ways, the one…
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: Didache 1, 1: SCh 248, 140