(for powers ye are, and great ones too)--which enable mortal man to tell a story worth the hearing------that kindly shew him, where he is to begin it--and where he is to end it----what he is to put into it----and what he is to leave out--how much of it he is to cast into a shade--and whereabouts he is to throw his light! 
 which enable mortal man to tell a story worth the hearing - that kindly show him where to begin and where to end it - what to put in and what to leave out! 