I watched “Batman” with my children. This is, of course, quite a ridiculous film with the simplest of moral messages of good and evil, the overcoming of fears arising from childhood, of the ends not justifying the means and so on. However, I found it curiously gripping and inspiring.

What I like about it is the concept of a lone crusader, going out to do battle for what he thinks and knows to be right. Going into the chamber and asking an independent-minded question is a lot less heroic than jumping off a building, but it is what I can do and it’s a tiny bit more heroic than asking a planted question pressing the Minister.

The pursuit of justice, rather than the pursuit of office, is a surprisingly rare thing in politics.