This year's poll for World Book Day asked UK readers to name the most precious book they have read.
The results are a little surprising: classics win the day. John Ezard in the Guardian notes that the highest ranking contemporary adult fiction novel is Sebastian Faulks' Birdsong at number 17.
Jane Austen's Pride and Prejudice tops the list, with The Lord of the Rings in second place and Jane Eyre third. The Harry Potter books (collectively) are at number 4. The bible makes it to number 6 (thanks, it seems, to readers over 60) on the list and The Da Vinci Code is way down at number 42!
The entire list is here.
So what's your book you couldn't live without?
Mine? I keep going back to reread Lermontov's A Hero of our Time, but I might vote for Victor Hugos' Les Miserables - though it must be the unabridged version with its battle scenes and a complete history of the Paris sewers.
(Portrait of Jane Austen from the BBC's Icon website)