Nothing, except the weather report or a general maxim of conduct, is so unsafe to rely upon as a theory of fiction. Every great novel has broken many conventions. The greatest of all novels defies every formula; and only Mr. Percy Lubbock believes that War and Peace would be greater if it were another and an entirely different book. By this I do not mean to question Mr. Lubbock's critical insight. The Craft of Fiction is the best work in its limited field, and it may be studied to advantage by any novelist. In the first chapters there is a masterly analysis of War and Peace. Yet, after reading this with appreciation, I still think that Tolstoy was the best judge of what his book was about and of how long it should be.