John Gills Exposition of the Bible Commentary - Proverbs 29:11
A fool uttereth all his mind ,.... At once; tells all he knows, all that is in his breast; whatever he thinks, and all that he intends to do; what or whom he loves or hates. Or, "a fool brings out all his wrath"; so the Targum, Septuagint, Syriac, and Arabic versions: he cannot restrain it, nor hide it; it breaks out at once, even all of it, and is soon known, as in Proverbs 12:16 ; but a wise man keepeth it in till afterwards ; reserves his mind, and thoughts, and designs, to... read more
Matthew Henry's Complete Commentary - Proverbs 29:11
Note, 1. It is a piece of weakness to be very open: He is a fool who utters all his mind,?who tells every thing he knows, and has in his mouth instantly whatever he has in his thoughts, and can keep no counsel,?who, whatever is started in discourse, quickly shoots his bolt,?who, when he is provoked, will say any thing that comes uppermost, whoever is reflected upon by it,?who, when he is to speak of any business, will say all he thinks, and yet never thinks he says enough, whether choice or... read more