Ecclesiastes 1:16

16I said in my heart, “I have acquired great awisdom, surpassing all who were over Jerusalem before me, and my heart has had great experience of wisdom and knowledge.”

Ecclesiastes 2:1

The Vanity of Self-Indulgence

1I bsaid in my heart, “Come now, I will test you with pleasure; enjoy yourself.” But behold, this also was vanity.
The Hebrew term hebel can refer to a “vapor” or “mere breath”; also verses 11, 15, 17, 19, 21, 23, 26 (see note on 1:2)
Copyright information for ESV