The latest copy of the English edition of L'Osservatore Romano has the transcript of a speech by Cardinal Arinze given last November on the topic of "Latin and Vernacular: Language in the Roman Liturgy". The Vatican website has the transcript available online.
Here are some excerpts to whet your appetite:
"Most rites have an original language which also gives each rite its historical identity. The Roman Rite has Latin as its official language. The typical editions of its liturgical books are to this day issued in Latin. It is a remarkable phenomenon that many religions of the world, or major branches of them, hold on to a language as dear to them. We cannot think of the Jewish religion without Hebrew. Islam holds Arabic as sacred to the Qur'an. Classical Hinduism considers Sanskrit its official language. Buddhism has its sacred texts in Pali."
"In an ordination ceremony of 11 priests which I celebrated in Nigeria last July, about 150 priests sang the First Eucharistic Prayer in Latin. It was beautiful. The people, although no Latin scholars, loved it. It should be just normal that parish churches where there are four or five Masses on Sunday should have one of these Masses sung in Latin."
"Those ... who want to give the impression that the Church has put Latin away from her liturgy are mistaken. A manifestation of people's acceptance of Latin liturgy well celebrated was had at the world level in April 2005, when millions followed the burial rites of Pope John Paul II and then, two weeks later, the inauguration Mass of Pope Benedict XVI over the television."
"Indeed, we can say that the most important thing in divine worship is not that we understand every word or concept. No. The most important consideration is that we stand in reverence and awe before God, that we adore, praise and thank him. The sacred, the things of God, are best approached with sandals off. "
"Language is not everything. But it is one of most important elements that need attention for good and faith-filled liturgical celebrations."