'Folly' in the Bible

And I applied my heart to the knowledge of wisdom, and to the knowledge of madness and folly: I perceived that this also is a striving after the wind.

I searched in my heart how to cherish my flesh with wine, while practising my heart with wisdom; and how to lay hold on folly, till I should see what was that good for the children of men which they should do under the heavens all the days of their life.

And I turned myself to behold wisdom, and madness, and folly; for what shall the man do that cometh after the king? that which hath already been done.

And I saw that wisdom excelleth folly, as light excelleth darkness.

I turned, I and my heart, to know, and to search, and to seek out wisdom and reason, and to know wickedness to be folly, and foolishness to be madness;

Dead flies cause the ointment of the apothecary to stink and ferment; so a little folly is weightier than wisdom and honour.

folly is set in great dignities, but the rich sit in a low place.

The beginning of the words of his mouth is folly; and the end of his talk is mischievous madness.