'Fool' in the Bible

What I am now saying, I do not say by the Lord's command, but as a fool in his folly might, in this reckless boasting.

If however I should choose to boast, I should not be a fool for so doing, for I should be speaking the truth. But I forbear, lest any one should be led to estimate me more highly than what his own eyes attest, or more highly than what he hears from my lips.