Wisdom, Book of Proverbs

On the countenance of a discerning person is wisdom, but the eyes of a fool are on the ends of the earth.

+ Proverbs 17, 24

[17:24] Wisdom is visible on the countenance (i.e., mouth, lips, tongue) of the wise person; its ultimate source is the heart. Fools have no such source of wisdom within them, a point that is nicely made by referring to the eye of the fool, roving over the landscape.

http://www.usccb.org/bible/proverbs/17