Ecclesiastes 2:15

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

Ecclesiastes 6:8

For what advantage hath the wise above the fool? what hath the poor, that knoweth to walk before the living?

1 Kings 3:12

behold, I have done according to thy word: behold, I have given thee a wise and an understanding heart, so that there hath been none like unto thee before thee, neither after thee shall any arise like unto thee.

Ecclesiastes 1:2

Vanity of vanities, saith the Preacher, vanity of vanities! all is vanity.

Ecclesiastes 1:14

I have seen all the works that are done under the sun, and behold, all is vanity and pursuit of the wind.

Ecclesiastes 1:16

I communed with mine own heart, saying, Lo, I have become great and have acquired wisdom more than all they that have been before me over Jerusalem; and my heart hath seen much of wisdom and knowledge.

Ecclesiastes 1:18-1

For in much wisdom is much vexation, and he that increaseth knowledge increaseth sorrow.

Ecclesiastes 2:16

For there shall be no remembrance of the wise more than of the fool for ever; because everything is already forgotten in the days which come. And how dieth the wise even 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 communed with mine own heart, saying, Lo, I have become great and have acquired wisdom more than all they that have been before me over Jerusalem; and my heart hath seen much of wisdom and knowledge.
1 Kings 3:12
behold, I have done according to thy word: behold, I have given thee a wise and an understanding heart, so that there hath been none like unto thee before thee, neither after thee shall any arise like unto thee.

Then i

Ecclesiastes 2:1
I said in my heart, Come now, I will try thee with mirth, therefore enjoy pleasure. But behold, this also is vanity.
Ecclesiastes 1:2
Vanity of vanities, saith the Preacher, vanity of vanities! all is vanity.

General references

Ecclesiastes 1:2
Vanity of vanities, saith the Preacher, vanity of vanities! all is vanity.