Ecclesiastes 2:11-13

11Then I looked on all the works that my hands had done And on the labor in which I had toiled; And indeed all was vanity and grasping for the wind. There was no profit under the sun.

12Then I turned myself to consider wisdom and madness and folly; For what can the man do who succeeds the king?— Only what he has already done.

13Then I saw that wisdom excels folly As light excels darkness.