Trent on the Roman Rite
Excerpted from the canons on the Holy Mass
"Can. 9. If anyone says that the rite of the Roman Church, according to which a part of the canon and the words of consecration are pronounced in a low tone, is to be condemned; or that the mass ought to be celebrated in the vernacular tongue only; or that water ought not to be mixed with the wine that is to be offered in the chalice because it is contrary to the institution of Christ, let him be anathema."
"30. To promote active participation, the people should be encouraged to take part by means of acclamations, responses, psalms, antiphons, hymns, as well as by actions, gestures and bodily attitudes. And at the proper time a reverent silence should be observed."
"36. (1) The use of the Latin language, with due respect to particular law, is to be preserved in the Latin rites. (2) But since the use of the vernacular whether in the Mass, the administration of the sacraments, or in other parts of the liturgy, may frequently be of great advantage to the people, a wider use may be made of it, especially in readings, directives and in some prayers and chants. Regulations governing this will be given separately in subsequent chapters."
Thus Vatican II does not abrogate the use of Latin nor the silence of the congregation at times.
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