1Comfort versus adventure
Bilbo's Bag End life is deliberately seductive: food, armchair, no surprises. The sign Gandalf scratches on his door—'Burglar wants a good job, plenty of excitement and reasonable reward'—is the intrusion of the wide world into a life built to exclude it. Bilbo misses the dwarves' morning departure and has to run to catch up, which is the whole book in miniature: adventure is something you chase half-dressed, not something you choose cleanly. By the end he stops an auction of his own belongings and settles back in, but his neighbors find him 'queer.' The book's point: you cannot be the hobbit you were, and that is the price and the prize.
Characters:Bilbo BagginsGandalf
2Greed for treasure
The dragon is greed made flesh, sitting on the hoards of dwarves and men he drove out or killed. But the book refuses to keep greed at a safe distance: Thorin, once the treasure is his again, fortifies his gate, demands reinforcements from Dain, and banishes Bilbo for returning the Arkenstone. Smaug even tells Bilbo that hobbits' greed for treasure will do him no good. Only Thorin's dying words cut through: 'If more of us valued food and cheer and song above hoarded gold, it would be a merrier world.' The book's point: the hoard corrupts its claimants as surely as it corrupted the dragon.
Characters:Bilbo BagginsThorin OakenshieldSmaug
3Smallness as strength
Bilbo is hired as the expert 'burglar' as a joke of proportions—half the size of the men and dwarves around him. Yet his smallness is exactly what works: he alone can wear the ring unseen, talk his way past Gollum, free the dwarves from spiders, slip through the Elvenking's halls, and creep down to Smaug's lair. His weapon is a small knife that serves him as a sword. The book's point: the qualities a heroic world overlooks—stealth, talk, domestic courage—are the ones that actually save it.
Characters:Bilbo BagginsSmaugGollumThe Elvenking
4Luck and providence
Bilbo survives by accidents he does not engineer: finding a magic ring in the dark, being knocked unconscious at the right moments, a thrush overhearing Smaug's weakness and carrying the news to Bard. Gandalf mimics troll voices until dawn turns them to stone; eagles arrive at the Wargs' circle and again at the battle's turning; Beorn appears in bear form when the line breaks. The book's point: the world bends toward those on a right errand—fortune in The Hobbit is not random, but a quiet moral architecture under the adventure.
Characters:Bilbo BagginsGandalfSmaugBard the BowmanBeorn
5Home, changed
The quest is framed by Bag End: it begins with dwarves eating Bilbo's stores and ends with his belongings being auctioned because he was presumed dead. He has difficulty proving his identity—a man who vanished cannot easily prove he came back. He takes only two small chests, one of silver and one of gold, refusing more, and announces, 'I am going to have a party.' The book's point: home is not a place you preserve; it is a place you return to as someone new, and the return itself is the last stage of the adventure.
Characters:Bilbo Baggins