And I gave my mind to know [practical] wisdom and to discern [the character of] madness and folly [in which men seem to find satisfaction]; I perceived that this also is a searching after wind and a feeding on it.
So I turned to consider [human] wisdom and madness and folly; for what can the man do who succeeds the king? Nothing but what has been done already.
I turned about [penitent] and my heart was set to know and to search out and to seek [true] wisdom and the reason of things, and to know that wickedness is folly and that foolishness is madness [and what had led me into such wickedness and madness].
I said of laughter, It is mad, and of pleasure, What does it accomplish?