Writing Less is More
I am not sure of the moral obligation, will have to think about that more. But I do think that using length as a criterion for quality is wrongheaded. This same friend told me, apropos of this incident, that he wrote short books, and rued that he probably would have had more acclaim if his books had been longer.
Give me a short volume any day. When I read Don Quixote for the first time while on sabbatical several years ago, I marveled at how repetitive it was. I cried out, Miguel, where was your copy editor? But I have been told by our resident Cervantes scholar that the tale of the Knight of the Rueful Figure was not edited as books are today.