9 If a wise man contendeth with a foolish man, whether he rage or laugh, there is no rest.
9. contendeth–that is, in law.
whether . . . laugh–The fool, whether angry or good-humored, is unsettled; or referring the words to the wise man, the sense is, that all his efforts, severe or gentle, are unavailing to pacify the fool.
If you try to talk or deal with a fool, wheather he is happy or angery. Your efforts are wasted because,he will not listen, for he is a fool and will never conceed the point or say that his ways are foolish.