17 (A)And I set my heart to know wisdom and to know madness and folly. I perceived that this also is grasping for the wind.

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17 Then I applied myself to the understanding of wisdom,(A) and also of madness and folly,(B) but I learned that this, too, is a chasing after the wind.

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25 (A)I applied my heart to know,
To search and seek out wisdom and the reason of things,
To know the wickedness of folly,
Even of foolishness and madness.

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25 So I turned my mind to understand,
    to investigate and to search out wisdom and the scheme of things(A)
and to understand the stupidity of wickedness
    and the madness of folly.(B)

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