17 And I applied my heart to know wisdom and to know ^qmadness and folly. I perceived that this also is but a striving after wind.

25 I turned my heart to know and to ^bsearch out and to seek wisdom and the scheme of things, and to know the wickedness of ^cfolly and the foolishness that is madness.

16 When I applied my heart to know wisdom, and to see the business that is done on earth, how neither day nor night do one’s eyes see sleep,