“Instead of asking what we are reading on World Book Day, we ought to raise the level of questioning: what are we reading and how is it changing us? What is it making us think? What questions are the book raising? Even if the answer is, to all these questions, not a lot (I am unchanged, not thinking about anything, and asking no questions), to ask them makes us perhaps realise that some books are like junk food while others are more nutritious.“