Will Self says we should embrace the intellectual challenge of "difficult" books and art, and value works which are more taxing than our increasingly low-brow popular culture. "The most disturbing result of this retreat from the difficult is to be found in arts and humanities education, where the traditional set texts are now chopped up into boneless nuggets of McKnowledge, and students are encouraged to do their research - such as it is - on the web." Producer: Sheila Cook.