Muriel: I admire Favilla' s novels, but she does not deserve to be considered great writer  The point is that, no matter how distinctive her style may be, her subject matter is simply not varied enough  John: I think you are wrong to use that criterion
A great writer does not need any diversity in subject matter; however, a great writer must at least have the ability to explore a particular theme deeply
whether the number of novels that a novelist has written should be a factor in judging whether that novelist is great