In the mouth of the foolish is a rod of pride: but the lips of the wise shall preserve them.
All Commentaries on Proverbs 14:3 Go To Proverbs 14
Ambrose of Milan
AD 397
What judgment harder than that of our hearts, whereby each one stands convicted and accuses himself of the injury that he has wrongfully done against his brother? This the Scriptures speak of very plainly, saying, “Out of the mouth of fools there is a rod for wrongdoing.” Folly, then, is condemned because it causes wrongdoing. Ought we not rather to avoid this, than death, or loss, or want, or exile or sickness? Who would not think some blemish of body or loss of inheritance far less than some blemish of soul or loss of reputation? Duties of the Clergy.