Words from the mouth of the wise are gracious, but fools are consumed by their own lips.
References for Ecclesiastes 10:12
At the beginning their words are folly; at the end they are wicked madness—
and fools multiply words. No one knows what is coming— who can tell someone else what will happen after them?
References for Ecclesiastes 10:14
The toil of fools wearies them; they do not know the way to town.