• Ecclesiastes 2:1-3
    I said in my heart, “Come now, I will test you with mirth; therefore enjoy pleasure”; but surely, this also was vanity. I said of laughter—“Madness!”; and of mirth, “What does it accomplish?” I searched in my heart how to gratify my flesh with wine, while guiding my heart with wisdom, and how to lay hold on folly, till I might see what was good for the sons of men to do under heaven all the days of their lives.
     
  • Proverbs 15:21
    Folly is joy to him who is destitute of discernment,
    But a man of understanding walks uprightly.

     
  • Ecclesiastes 2:9
    So I became great and excelled more than all who were before me in Jerusalem. Also my wisdom remained with me.

     
  • Ecclesiastes 2:11
    Then 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.