'Now, what I want is Facts ... Facts alone are wanted in life, ' exclaims Mr Gradgrind at the beginning of Charles Dickens' novel Hard Times. Literature is not about facts alone, and - despite two and a half thousand years of arguments - no one can agree what it is, or how to study it. But, argues Robert Eaglestone, it is precisely the open-ended nature of literature - that the meaning of texts and our responses to them can never be finalised...