What profit hath he that worketh in that wherein he laboureth?
Ver. 9. What profit hath he that worketh? &c.] i.e., How can any man, by any means he can use, help or hinder this volubility and vanity that he meets with in every creature? Cui bono? What profit? See Trapp on " Ecc 1:3 " whereunto this verse relateth, as being a conclusion of the principal argument.