From JR, of course:
To me the great divide is between the talk- ative and the quiet. Do they just say every- thing that’s on their minds, even before it’s on their minds? Sometimes I think I could just turn up my head like a Walkman so what’s going on there could be heard by others. But there would still be a difference. For inside the head they are talking to people like them, and I am talking to someone like me: he is quiet and doesn’t much like being talked at; he can’t conceal how easily he gets bored.