"We have nothing to say which you have not already heard, no doctrine to propound that is new to anyone; but we treat of matters which it is necessary for everyone to bear in mind, and God inspires us with the hope that our message will not fail to bear abundant fruit.
Our earnest appeal to you is this: Be renewed in the spirit of your mind, and put on the new man, who according to God is created in justice and sanctity of truth;[Ephes. 4: 23-24] that will be the most excellent and most acceptable gift which you could offer to us on this fiftieth anniversary of our ordination.
For our own part, when we review before God with a contrite heart and in a spirit of humility[Dan. 3:39] the years passed in the priesthood, we will feel that we are making reparation in some measure for the human frailties which we have cause to regret, by thus admonishing and exhorting you to walk worthily of God, in all things pleasing.[Col. 1:10]
Pope St. Pius X, Haerent Animo, August 4, 1908