"[T]o some degree I'm a jester, a licensed fool; under the guise of impartiality or academic dottiness, you're given a licence to say what other people won't say. I take the view that intellectuals tend not to be very good at politics. You need to be articulate, you need to be good at communication, you need to be able to construct a narrative and set out a vision; but you also need not to have self-doubt – and that's a crucial feature of academic life."