Ecclesiastes 2:9-12

⁹And I became great, and increased more than all that had been before me in Jerusalem: also my wisdom remained with me.

¹⁰And whatsoever mine eyes desired I kept not from them: I withheld not my heart from any joy; for my heart rejoiced in all my labour, and this was my portion from all my labour.

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.