Ecclesiastes 1:16-18 NIV

16 I thought to myself, "Look, I have grown and increased in wisdom more than anyone who has ruled over Jerusalem before me;1 I have experienced much of wisdom and knowledge."

References for Ecclesiastes 1:16

17 Then I applied myself to the understanding of wisdom,2 and also of madness and folly,3 but I learned that this, too, is a chasing after the wind.

References for Ecclesiastes 1:17

18 For with much wisdom comes much sorrow;4 the more knowledge, the more grief.5

References for Ecclesiastes 1:18