Why does the Church cling to Latin, a dead language?

The Catholic Answers

For one reason, precisely because it is dead! In modern and living languages, words are constantly changing their meaning whilst in a dead language, such as Latin, they do not. The essential doctrine and significance of Christianity must not change, and the safest way to preserve it intact is to keep it in an unchangeable language. Again, a universal Church must have at least her chief form of worship in a universal language. Christ came to save all men, and wherever a member of the true Church may be in this world he should be able to find himself at home at the central act of Christian worship. The Mass, being said in Latin, is the same in all lands. If a Frenchman, who could not understand a word of English, were to enter a Catholic Church in London, he would be at home the moment the Mass began. An English service would be a mystery to him. I myself have said Mass with as many as fifteen different nationalities present, and not all could follow my discourse when I spoke to those present, though I spoke for a few minutes in English, in French, and in Italian. There were still many who could not understand any of these languages, but being all Catholics, they were quite at home the moment I turned to the Altar and went on with the Mass in Latin. It brings out the wisdom and the universality of the Catholic Church. The Priest ascends the Altar to intercede with God on behalf of the people. Those present kneel, and in their hearts pour out their prayers for their own necessities. They feel no more need to know just what the Priest is saying than the Jews who knelt at the foot of the mountain felt the need of knowing just what Moses was saying to God on their behalf at the top. And here once again let me say that if anyone should complain of the use of Latin, it should be those who have to endure it. And I have never yet heard a Catholic soul complain that it caused difficulty, or that he or she would like it changed.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty