Ecclesiastes 2:10-12

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

¹¹Then I looked on all the works that my hands had wrought, and on the labor that I had labored to do: and behold, all was vanity and vexation of spirit, 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.