The Dogmatic Constitution on the Liturgy emphasizes a key point so as to derive the maximum fruit from every Mass with these words: “To participate fully, actively, and consciously in the Mass…” As a further stimulus to live out the Mass to the fullest extent possible, recall the words on the plaque in many of the Sacristies in Religious Communities, as a reminder to the priest-celebrant these words: “Priest, man of God, celebrate this Mass as if it were your first Mass, your last…