Pope Paul VI
Sacerdotalis Caelibatus §25
Sacerdotalis Caelibatus: On the Celibacy of the Priest
25 This biblical and theological view associates our ministerial priesthood with the priesthood of Christ; the total and exclusive dedication of Christ to His mission of salvation provides reason and example for our assimilation to the form of charity and sacrifice proper to Christ our Savior. This vision seems to Us so profound and rich in truth, both speculative and practical, that We invite you, venerable brothers, and you, eager students of Christian doctrine and masters of the spiritual life, and all you priests who have gained a supernatural insight into your vocation, to persevere in the study of this vision, and to go deeply into the inner recesses and wealth of its reality. In this way, the bond between the priesthood and celibacy will more and more be seen as closely knit—as the mark of a heroic soul and the imperative call to unique and total love for Christ and His Church. Ecclesiological Significance
Source: Sacerdotalis Caelibatus (Vatican.va)