Sometimes, you have more books than you know what to do with. Sometimes you accidentally pick up a written book as a piece of loot (looking at you, Roguelike Dungeons). Sometimes you just feel like destroying knowledge, you monster.
Want some paper? Rip it out of a book. Three paper per book, written book, or writable book. No refunds on any of the other materials.
Alternatively, chuck it into your furnace and get some ashes. These can be used to make black dye, or as fuel in a furnace to smelt 2 items. You can combine 4 ashes to make a piece of charcoal.
