[Quiet Man Cometh]

That would be War and Peace for me, and whether the length is justified is hard to say. It's a very simple and easy read. Tolstoy doesn't beat around the bush or take any longer than he needs to when describing a particular thing, but there are a hell of a lot of particular things! Each chapter is very short, on average maybe about 2 to 3 'flips' and to the point, unless one is reading some of the philosophical bits, but even then it's hardly tedious reading. There are just a lot of details. If he stuck only to the figures of the Bolkonskis and the Rostovs, and then only certain figures of those families, then yes, the novel could be much shorter. However, to do so would entirely change the nature of the book.