This is the opening paragraph in Nick Hornby’s How to be Good.
I am in a car park in Leeds when I tell my husband I don’t want to be married to him any more. David isn’t even in the car park with me. He’s at home, looking after the kids, and I have only called him to remind him that he should write a note for Molly’s class teacher. The other bit just sort of . . . slips out. This is a mistake, obviously. Even though I am, apparently, and to my immense surprise, the kind of person who tells her husband that she doesn’t want to be married to him any more, I really didn’t think that I was the kind of person to say so in a car park, on a mobile phone. That particular self-assessment will now have to be revised, clearly. I can describe myself as the kind of person who doesn’t forget names, for example, because I have remembered names thousands of times and forgotten them only once or twice. But for the majority of people, marriage-ending conversations happen only once, if at all. If you choose to conduct yours on a mobile phone, in a Leeds car park, then you cannot really claim that it is unrepresentative, in the same way that Lee Harvey Oswald couldn’t really claim that shooting presidents wasn’t like him at all. Sometimes we have to be judged by our one-offs.