Pope Paul VI
Sacerdotalis Caelibatus §13
Sacerdotalis Caelibatus: On the Celibacy of the Priest
13 The sum of these objections would appear to drown out the solemn and age-old voice of the pastors of the Church and of the masters of the spiritual life, and to nullify the living testimony of the countless ranks of saints and faithful ministers of God, for whom celibacy has been the object of the total and generous gift of themselves to the mystery of Christ, as well as its outward sign. But no, this voice, still strong and untroubled, is the voice not just of the past but of the present too. Ever intent on the realities of today, we cannot close our eyes to this magnificent, wonderful reality: that there are still today in God's holy Church, in every part of the world where she exercises her beneficent influence, great numbers of her ministers—subdeacons, deacons, priests and bishops—who are living their life of voluntary and consecrated celibacy in the most exemplary way. Nor can we overlook the immense ranks of men and women in religious life, of laity and of young people too, united in the faithful observance of perfect chastity. They live in chastity, not out of disdain for the gift of life, but because of a greater love for that new life which springs from the Paschal mystery. They live this life of courageous self-denial and spiritual joyfulness with exemplary fidelity and also with relative facility. This magnificent phenomenon bears testimony to an exceptional facet of the kingdom of God living in the midst of modern society, to which it renders humble and beneficial service as the "light of the world" and the "salt of the earth." (7) We cannot withhold the expression of Our admiration; the spirit of Christ is certainly breathing here.
Source: Sacerdotalis Caelibatus (Vatican.va)