I am jumping to the end of the thread to post this, but I thought as a fairly snobbish literary type who adored Tolkien as a kid, didn’t touch the books for twenty years and then somewhat-recently revisited them, I may have something to add.
I think the closest thing one can make to an “objective” appraisal of a work is to ask, “Does this work achieve what it appears to set out to achieve?” Not a perfect yardstick, but at least it sidesteps the danger of attacking LotR because it’s not A Portrait of a Lady. By that measure, Tolkien succeeds far more often than he falls short. He creates a world of believable scale and breadth, with a coherent history that serves an important purpose in the story. The vision undergirding Lord of the Rings is clear and consistent: pastoral simplicity trumps technological expansion; courage and valor can be shown by anyone, not just the so-called mighty; and evil is a corruption of good that cannot create but only parody and distort.
As a story, LotR is often quite thrilling. Revisiting the books, I was surprised at how positively frightening the scene at the barrow-downs was, and the claustrophobic dread of Frodo’s passage through Cirith Ungol is almost suffocating. The flaws of the storytelling in this context are relatively minor: stiff, wan dialogue; excessive details (we don’t need to see every twist and turn of Frodo and Sam’s journey); and a fondness for archaism that gets pretty heavy-handed by the end.
But there’s a deeper problem with Lord of the Rings, and that’s why I think many refuse to rank it as truly great literature. That problem, in a word, is Frodo.
As a hero, Frodo embodies Tolkien’s ideal of pastoral innocence. Like all Shire-folk, he is neither acquisitive nor particularly ambitious, and inhabits a world that provides him with everything he needs and wants. One of the simplest ways to arrive at an understanding of a literary character is to ask, “What does this character want?” Frodo doesn’t want anything, except to live in the Shire, where nothing ever changes and nobody wants anything beyond a nice dinner.
What this means in terms of the story is that Frodo has no inherent flaws or desires for the Ring to exploit — it ends up making him paranoid and deranged, but these are not qualities inherent in his character, and it means that there is something missing at the heart of Lord of the Rings: a sense that its main character must overcome his own weaknesses and grow from a simple rustic into a hero. For all his adventures, Frodo doesn’t evolve; he returns to the Shire traumatized and discontented, but he is essentially the same person he was when he left.
And as Tolkien apologists will point out, that is the whole point. The Shire represents humans living in pre-modern accord with nature, and that is the virtue that allows Frodo to remain uncorrupted by the Ring, in contrast to “heroic” Boromir. But incorruptible innocence, when you get right down to it, isn’t all that interesting. It means that for all its thrilling epic sweep, Lord of the Rings is psychologically a vacuum; the characters are missing an important part of their inner lives.
(The movies, for all their missteps, attempted to address this by giving Aragorn an internal struggle: he worries that he will falter and give into weakness as his Numenorean ancestors did. Some might argue this made him seem weaker; I thought it made him more heroic, as well as someone I could empathize with a bit more.)
So yes, Lord of the Rings achieves what it appears to set out to. But what it sets out to achieve is in some ways anti-modern, and out of step with what many have expected from literary writing in the last century or so.