Rome was in the most dangerous inclination to change on account of the unequal distribution of wealth and property, those of highest rank and greatest spirit having impoverished themselves by shows, entertainments, ambition of offices, and sumptuous buildings, and the riches of the city having thus fallen into the hands of mean and low-born persons. So that there wanted but a slight impetus to set all in motion, it being in the power of every daring man to overturn a sickly commonwealth.
PlutarchThe talkative listen to no one, for they are ever speaking. And the first evil that attends those who know not to be silent is that they hear nothing.
PlutarchIf any man think it a small matter, or of mean concernment, to bridle his tongue, he is much mistaken; for it is a point to be silent when occasion requires, and better than to speak, though never so well.
Plutarch