meekness will curb the tongue

"Meekness will curb the tongue, and 'keep the mouth as with a bridle' when the heart is hot. Even when there may be occasion for a keenness of expression, and we are called to rebuke sharply--cuttingly, Titus 1:13--yet meekness forbids all fury and indecency of language, and every thing that sounds like clamor and evil-speaking."