"Harry Potter and the Philosopher's Stone" is apparently one of the most translated pieces in modern literature. Someone on Reddit pointed out that a Brainfuck version was missing, and I felt that urge to just waste away one hour of my life.
So, here it is. Running book.bf will print out the full contents of the book (US edition).
$ curl https://raw.githubusercontent.com/neysofu/harry-potter/master/book.bf | ./brainfuck
Harry Potter and the Sorcerer's Stone
CHAPTER ONE
THE BOY WHO LIVED
Mr. and Mrs. Dursley, of number four, Privet Drive, were proud to say
that they were perfectly normal, thank you very much.
...
Be careful, many implementations will run out of memory.