KJV : And I gave <05414> (8799) my heart <03820> to know <03045> (8800) wisdom <02451>, and to know <03045> (8800) madness <01947> and folly <05531>: I perceived <03045> (8804) that this <01571> also is vexation <07475> of spirit <07307>.NASB : And I set my mind to know wisdom and to know madness and folly; I realized that this also is striving after wind.NASB# : And I set<5414> my mind<3820> to know<3045> wisdom<2451> and to know<3045> madness<1947> and folly<5531>; I realized<3045> that this<2088> also<1571> is striving<7475> after wind<7307>.