'Fool' in the Bible

The wise man's eyes are in his head, and the fool walketh in darkness; but I myself also perceived that one event happeneth to them all.

And I said in my heart, As it happeneth to the fool so will it happen even to me; and why was I then so wise? Then I said in my heart that this also is vanity.

For there shall be no remembrance of the wise more than of the fool for ever; because everything is already forgotten in the days which come. And how dieth the wise even as the fool?

And who knoweth whether he will be a wise man or a fool? yet shall he have rule over all my labour at which I have laboured, and wherein I have been wise under the sun. This also is vanity.

The fool foldeth his hands together, and eateth his own flesh.

For what advantage hath the wise above the fool? what hath the poor, that knoweth to walk before the living?

For as the crackling of thorns under a pot, so is the laughter of the fool. This also is vanity.

Yea also, when he that is a fool walketh by the way, his sense faileth him, and he saith to every one that he is a fool.

The words of a wise man's mouth are gracious; but the lips of a fool swallow up himself.

And the fool multiplieth words: yet man knoweth not what shall be; and what shall be after him, who will tell him?