Wisdom is too high for a fool: he openeth not his mouth in the gate.
Wisdom is too high for a fool - to attain unto. The difficulty lies not in wisdom, which is easy to the sincere, but in the fool's own unwillingness and sloth (Proverbs 14:6).
He openeth not (he dares not, for want of wisdom, open) his mouth in the gate - in the court of justice: loquacious and babbling as he is elsewhere.