Wisdom. Hebrew, plural = true wisdom. See notes on Pro_1:20; Pro_9:1; and Compare Pro_14:1.
is too high = seems to be, or is regarded as coral: i.e. as an ornament costly, and, to him, unattainable. Occurs three times (here, Job_28:18, and Eze_27:16).
fool. Hebrew. 'evil. See note on Pro_1:7.
openeth not his mouth in the gate: i.e. where the judges sit. A fool is not appointed as a judge.