Catechism of the Catholic Church §2440 — excerpt
Direct aid is an appropriate response to immediate, extraordinary needs caused by natural catastrophes, epidemics, and the like. But it does not suffice to repair the grave damage resulting from destitution or to provide a lasting solution to a country's needs.
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: SRS 16 · CA 26
