O

Often speak to the praise of God, never of yourself. For other things, because with many words sin is not absent, speak as few as you can, or rather, none that are not a blessing.
Open not your mouth to speak of other men's infirmities, especially behind their backs, but if to their face not without grief and sorrow.
Of every idle word account must be given, and much more every wicked word, and therefore let your speech be gracious, good and for the sake of others.