Ecclesiastes 2:15

So I said {to myself}, "{If I also suffer the same fate as the fool}, {what advantage is my great wisdom}?" So I said {to myself}, "This also [is] vanity!"

Ecclesiastes 6:8

So do the wise [really] have an advantage over fools? {Can the poor [really] gain anything by knowing how to act in front of others}?

1 Kings 3:12

behold, I do hereby do according to your word. I hereby give you a wise and discerning heart; there was no one like you before you, nor afterwards will one like you arise.

Ecclesiastes 1:2

"Vanity of vanities!" says the Teacher, "Vanity of vanities! All [is] vanity!"

Ecclesiastes 1:14

I saw all the works that are done under the sun. Look! Everything [is] vanity and chasing wind.

Ecclesiastes 1:16

{I said to myself}, "Look! I have become great and have increased [in] wisdom more than anyone who {has preceded} me over Jerusalem. {I have acquired a great deal of wisdom and knowledge}."

Ecclesiastes 1:18-1

For in much wisdom [is] much frustration, and whoever increases knowledge increases sorrow.

Ecclesiastes 2:16

Certainly no one will remember the wise man or the fool in {future generations}. When [future] days come, both will have been forgotten already. How [is it that] the wise man dies the same as the fool?

Treasury of Scripture Knowledge

Summary

Then said I in my heart, As it happeneth to the fool, so it happeneth even to me; and why was I then more wise? Then I said in my heart, that this also is vanity.

General references

Bible References

And why

Ecclesiastes 1:16
{I said to myself}, "Look! I have become great and have increased [in] wisdom more than anyone who {has preceded} me over Jerusalem. {I have acquired a great deal of wisdom and knowledge}."
1 Kings 3:12
behold, I do hereby do according to your word. I hereby give you a wise and discerning heart; there was no one like you before you, nor afterwards will one like you arise.

Then i

Ecclesiastes 2:1
I said {to myself}, "Come! I will test pleasure {to see whether it is worthwhile}." But look, "This also [is] vanity!"
Ecclesiastes 1:2
"Vanity of vanities!" says the Teacher, "Vanity of vanities! All [is] vanity!"

General references

Ecclesiastes 1:2
"Vanity of vanities!" says the Teacher, "Vanity of vanities! All [is] vanity!"