· "From the liturgy, therefore, particularly the eucharist, grace is poured forth upon us from a fountain; the liturgy is the source achieving in the most effective way possible human sanctification and God's glorification, the end to which all the Church's other activities are directed." SC # 10.
· "The Church earnestly desires that all the faithful be led to that full, conscious, and active participation in liturgical celebrations called for by the very nature of the liturgy. Such participation by the Christian people as 'a chosen race, a royal priesthood, a holy nation, God's own people' is their right and their duty by reason of their baptism." SC # 14
· "To promote active participation, the people should be encouraged to take part by means of acclamations, responses, psalmody, antiphons, and songs, as well as by actions, gestures and bearing. And at proper times all should observe a reverent silence." SC # 30.
· "In the liturgical celebrations each one, minister or layperson, who has an office to perform, should do all of, but only, those parts which pertain to that office by the nature of the rite and the principles of liturgy." SC # 28
· - “Regulation of the liturgy depends solely on the authority of the Church, that is, on the Apostolic See and, accordingly as the law determines, on the bishop,..."
- “Therefore, no other person, not even if he is a priest, may on his own add, remove, or change anything in the liturgy." SC # 22