71 Heb “gave my heart,” or “set my mind.” See v. 13.
72 The phrase “the benefit of” does not appear in the Hebrew text, but is supplied in the translation for clarity.
73 The word “over” does not appear in the Hebrew text, but is supplied in the translation for clarity.
74 The terms שִׂכְלוּת (sikhlut, “folly”) and הוֹלֵלוֹת (holelot, “foolishness”) are synonyms. The term שִׂכְלוּת (alternate spelling of סִכְלוּת, sikhlut) refers to foolish behavior ( סִכְלוּת), while הוֹלֵלוֹת refers to foolish ideas and mental blindness ( הוֹלֵלוֹת). Qoheleth uses these terms to refer to foolish ideas and self-indulgent pleasures (e.g., Eccl 2:2–3, 12–14; 7:25; 9:3; 10:1, 6, 13).
75 Heb “I know.”
76 The term גַּם (gam, “even”) is a particle of association and emphasis ( גַּם).
77 This term does not appear in the Hebrew text, but is supplied in the translation for clarity.
78 This term does not appear in the Hebrew text, but is supplied in the translation for clarity.
79 Heb “striving of wind.”

In other versions

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.

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.

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

So I set out to learn everything from wisdom to madness and folly. But I learned firsthand that pursuing all this is like chasing the wind.

So I dedicated myself to learn about wisdom and to learn about delusion and folly. However, I discovered that this also is chasing wind.

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

Public Domain