"Many men today call perfect continence impossible. The more they do so, the more humbly and perseveringly priests should join with the Church in praying for the grace of fidelity. It is never denied to those who ask. At the same time let priests make use of all the supernatural and natural helps which are available to all. Let them not neglect to follow the norms, especially the ascetical ones, which have been tested by the experience of the Church and which are by no means less necessary in today's world. And so this most holy Synod beseeches not only priests, but all the faithful to have at heart this precious gift of priestly celibacy. Let all beg of God that He may always lavish this gift on His Church abundantly."
-Vatican Council II, Decree on the Ministry and Life of Priests.