Catechism of the Catholic Church §2448 — excerpt
"In its various forms - material deprivation, unjust oppression, physical and psychological illness and death - human misery is the obvious sign of the inherited condition of frailty and need for salvation in which man finds himself as a consequence of original sin.
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, instruction, Libertatis conscientia, 68