“(Liturgy) is of the essence of the Church that she be both human and divine, visible
and yet invisibly equipped, eager to act and yet intent on contemplation, present in this world
and yet not at home in it; and she is all these things in such wise that in her the human is directed and subordinated to the divine, the visible likewise to the invisible, action to contemplation, and this present world to that city yet to come, which we seek.”

Sacrosanctum Concilium, Dec. 4, 1963, No. 2