Catechism of the Catholic Church §1936 — excerpt
On coming into the world, man is not equipped with everything he needs for developing his bodily and spiritual life. He needs others. Differences appear tied to age, physical abilities, intellectual or moral aptitudes, the benefits derived from social commerce, and the distribution of wealth.
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: GS 29 # 2