Ecclesiastes 2:10-12

¹⁰And whatsoever mine eyes desired I kept not from them; I withheld not my heart from any joy, for my heart had joy of 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 I had laboured to do; and, behold, all was vanity and a striving after wind, and there was no profit under the sun.

¹²And I turned myself to behold wisdom, and madness and folly; for what can the man do that cometh after the king? even that which hath been already done.