“For in guarding his mouth, and restraining his tongue, and in not speaking before examining, pondering, and weighing his words—as to whether this should be said, that should be answered, or whether it be a suitable time for this remark—he certainly is practicing modesty, gentleness, patience. So he will not burst out into speech through displeasure or anger, nor give sign of any passion in his words, nor proclaim that the flames of lust are burning in his language, or that the incentives of wrath are present in what he says. “
(St Ambrose of Milan, ‘Duties of the Clergy Bk 1)