Pontifical Mass celebrated before the Pope at the Altar of the Sistine Chapel.
"...Since the nature of man is such that he cannot without external means be raised easily to meditation on divine things, holy mother Church has instituted certain rites, namely, that some things in the Mass be pronounced in a low tone and others in a louder tone. She has likewise, in accordance with apostolic discipline and tradition, made use of ceremonies, such as mystical blessings, lights, incense, vestments, and many other things of this kind, whereby both the majesty of so great a sacrifice might be emphasized and the minds of the faithful excited by those visible signs of religion and piety to the contemplation of those most sublime things which are hidden in this sacrifice."
____Canons and Decrees of the Council of
