Chapter 21 — Part II: The Sacraments — Holy Orders
Section 33. Some, however, assert that by tonsure is denoted the royal dignity, that is, the portion reserved especially for those who are called to the inheritance of the Lord. It will readily be seen that what the Apostle Peter says of all the faithful: You are a chosen generation, a kingly priesthood, a holy nation, applies especially and with much greater reason to the ministers of the Church.