Catechism of the Catholic Church §2273 — excerpt
The inalienable right to life of every innocent human individual is a constitutive element of a civil society and its legislation:
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: CDF, Donum vitae III