John Chrysostom
The words of the foolish are like a rod of irritation. Earlier, you mentioned that a wise individual using their speech guides the heartless with a rod (Proverbs 10:13); how then is it, you ask, that the same is attributed to the foolish? Unequally so; this is a rod, yet it serves as a rod of irritation rather than one of guidance. One causes offense, while the other offers correction. Such actions can feel overwhelming, as if delivering a harsh blow. It is possible to rebuke and admonish with wisdom; correction that is tempered with wisdom is not detestable, burdensome, or disagreeable. The praise of a fool is more detrimental than that of a reprimand; conversely, when a wise person admonishes, it can feel as uplifting as praise. A certain sage has also pointed out that if a person speaks praise loudly, it should be interpreted as a concealed reproach.