2 This state of affairs is troubling consciences, perplexing some priests and young aspirants to the priesthood; it is a cause for alarm in many of the faithful and constrains Us to fulfill the promise We made to the Council Fathers. We told them that it was Our intention to give new luster and strength to priestly celibacy in the world of today. (1) Since saying this We have, over a considerable period of time earnestly implorred the enlightenment and assistance of the Holy Spirit and have examined before God opinions and petitions which have come to Us from all over the world, notably from many pastors of God's Church.
Source: Sacerdotalis Caelibatus (Vatican.va)