English Standard Version
And I applied my heart to know wisdom and to know madness and folly. I perceived that this also is but a striving after wind.

New American Standard Bible
And I set my mind to know wisdom and to know madness and folly; I realized that this also is striving after wind.

King James Bible
And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.

Holman Christian Standard Bible
I applied my mind to know wisdom and knowledge, madness and folly; I learned that this too is a pursuit of the wind.

International Standard Version
So I dedicated myself to learn about wisdom and knowledge, and about insanity and foolishness. And I discovered that this is also like chasing after the wind.

NET Bible
So I decided to discern the benefit of wisdom and knowledge over foolish behavior and ideas; however, I concluded that even this endeavor is like trying to chase the wind!

GOD'S WORD® Translation
I've used my mind to understand wisdom and knowledge as well as madness and stupidity. [Now] I know that this is [like] trying to catch the wind.

King James 2000 Bible
And I set my heart to know wisdom, and to know madness and folly: I perceived that this also is like grasping the wind.

American King James Version
And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.

American Standard Version
And I applied my heart to know wisdom, and to know madness and folly: I perceived that this also was a striving after wind.

Douay-Rheims Bible
And I have given my heart to know prudence, and learning, and errors, and folly: and I have perceived that in these also there was labour, and vexation of spirit,

Darby Bible Translation
And I applied my heart to the knowledge of wisdom, and to the knowledge of madness and folly: I perceived that this also is a striving after the wind.

English Revised Version
And I applied my heart to know wisdom, and to know madness and folly: I perceived that this also was a striving after wind.

Webster's Bible Translation
And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.

World English Bible
I applied my heart to know wisdom, and to know madness and folly. I perceived that this also was a chasing after wind.

Young's Literal Translation
And I give my heart to know wisdom, and to know madness and folly: I have known that even this is vexation of spirit;