Pope Paul VI
Sacerdotalis Caelibatus §43
Sacerdotalis Caelibatus: On the Celibacy of the Priest
43 All this, however, does not signify a relaxation of the existing law, and must not be interpreted as a prelude to its abolition. There are better things to do than to promote this hypothesis, which tears down that vigor and love in which celibacy finds security and happiness, and which obscures the true doctrine that justifies its existence and exalts its splendor. It would be much better to promote serious studies in defense of the spiritual meaning and moral value of virginity and celibacy. (84)
Source: Sacerdotalis Caelibatus (Vatican.va)