Ecclesiastes 2:11-13

11Then I looked on all the works that my hands had wrought, and on the labour that it had cost me to do [them]; and behold, all was vanity and pursuit of the wind, and there was no profit under the sun.

12And 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.

13And I saw that wisdom excelleth folly, as light excelleth darkness.