Catechism of the Catholic Church §2557 — excerpt
"I want to see God" expresses the true desire of man. Thirst for God is quenched by the water of eternal life (cf In 4:14).
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.