A fool uttereth all his mind: but a wise man keepeth it in till afterwards.
Proverbs 12:16
The fool -- in a day is his anger known, And the prudent is covering shame.
Proverbs 12:23
A prudent man is concealing knowledge, And the heart of fools proclaimeth folly.
Proverbs 14:33
In the heart of the intelligent wisdom doth rest. And in the midst of fools it is known.
Judges 16:17
that he declareth to her all his heart, and saith to her, 'A razor hath not gone up on my head, for a Nazarite to God I [am] from the womb of my mother; if I have been shaven, then hath my power turned aside from me, and I have been weak, and have been as any of the human race.'
Amos 5:13
Therefore is the wise at that time silent, For an evil time it [is].
Micah 7:5
Believe not in a friend, trust not in a leader, From her who is lying in thy bosom keep the openings of thy mouth.