Ecclesiastes 2:11-12

¹¹Then I looked at all the works that my hands had worked, and at the labor that I had labored to do; and behold, all was vanity and a chasing after wind, and there was no profit under the sun.

¹²I turned myself to consider wisdom, madness, and folly; for what can the king’s successor do? Just that which has been done long ago.