The philosophers ‘will need to use a lot of drugs’, Plato says in the Republic, talking of the guardians’ need to con the banausics into thinking that their destiny is to keep their betters pondering. It’s one of my favourite Plato lines – ‘No pun intended, man!’ as Russell Brand might say. The other night, I speed-read – or, if you like, e-read, crack-read, acid-read – Brand’s shlockbuster Revolution, and had the strange feeling of having read it faster than I had.

