Pope Paul VI
Sacerdotalis Caelibatus §92
Sacerdotalis Caelibatus: On the Celibacy of the Priest
92 The love which Jesus had for His Apostles showed itself very clearly when he made them ministers of His real and Mystical Body; (138) and even you in whose person "Our Lord Jesus Christ, the high priest, is present in the midst of those who believe," (139) know that you owe the best part of your hearts and pastoral care to your priests and to the young men preparing to be priests. (l40) In no other way can you better show this conviction than in the conscious responsibility and sincere and unconquerable love with which you preside over the education of your seminarians, and help your priests in every way possible to remain faithful to their vocation and their duties.
Source: Sacerdotalis Caelibatus (Vatican.va)