To make his own decision about whether Britain should leave the EU, Boris Johnson drafted two different columns for the Daily Telegraph: one for, one against.

By this means, he hoped to find out which case was the better, perhaps taking his cue from Auden: “How do I know what I think until I see what I say?”

I will be more economical, and put the case for and against the Prime Minister in a single article. Since this is ConservativeHome, the conservative case – in the sense of hanging on to what we’ve got – will get the last word.