" 'At this ... altar let innocence be in honor, let pride be sacrificed, anger slain, impurity and every evil desire laid low, let the sacrifice of chastity be offered in place of doves and instead of the young pigeons the sacrifice of innocence.' (Taken from the Consecration Of The Altar.)
"While we stand before the altar, then, it is our duty so to transform our hearts, that every trace of sin may be completely blotted out, while whatever promotes supernatural life through Christ may be zealously fostered and strengthened even to the extent that,
in union with the immaculate Victim, we become a victim acceptable to the eternal Father."
Taken from Article 100 of Pope Pius XII's Mediator Dei.