Adam Clarke on Ecclesiastes 2:15

As it happeneth to the fool - Literally, "According as the event is to the fool, it happens to me, even me." There is a peculiar beauty and emphasis in the repetition of me. Having pointed out the advantages that wisdom has over folly, he takes this opportunity of reminding us of the danger of trusting too much to it, by showing that it is equally subject to the common accidents of life; and, therefore, incapable of making us completely happy. Having given his sentiments on this point in general terms, he proceeds to those particular instances wherein human prudence chiefly exerts itself; and shows how egregiously it is mistaken in every one of them - C.