和合本
我又專心察明智慧、狂妄，和愚昧，乃知這也是捕風。

New International Version
Then I applied myself to the understanding of wisdom, and also of madness and folly, but I learned that this, too, is a chasing after the wind.

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.

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.

Updated 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.

Authorized King James Version Pure Cambridge Edition
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.

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;

Bible in Basic English
And I gave my heart to getting knowledge of wisdom, and of the ways of the foolish. And I saw that this again was desire for wind.

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.

English Standard Version
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