Proverbs 18:2-4

Amplified Bible

² 
A [closed-minded] fool does not delight in understanding,
But only in revealing his personal opinions [unwittingly displaying his self-indulgence and his stupidity].
³ 
When the wicked man comes [to the depth of evil], contempt [of all that is pure and good] also comes,
And with inner baseness (dishonor) comes outer shame (scorn).
⁴ 
The words of a man’s mouth are like deep waters [copious and difficult to fathom];
The fountain of [mature, godly] wisdom is like a bubbling stream [sparkling, fresh, pure, and life-giving].