There and Back Again was a book written by Bilbo Baggins recounting his adventures with Thorin II Oakenshield and his company during the quest to reclaim the Dwarf-realm of Erebor. Conceived as his memoirs, the book was begun by Bilbo upon his return to Bag End but not completed until his retirement in Rivendell.
Then something Tookish woke up inside him, and he wished to go and see the great mountains, and hear the pine-trees and the waterfalls, and explore the caves, and wear a sword instead of a walking-stick.
The Hobbit: An Unexpected Journey & Bilbo Baggins requested by kat-oakenshield
Look, I know you doubt me, I know you always have. And you’re right… I often think of Bag End. I miss my books, and my armchair, and my garden. See, that’s where I belong, that’s home. That’s why I came back… ‘cause you don’t have one, a home. It was taken from you. But I will help you take it back if I can.