The older I get, the more Scrooge-like I become. I’m dyspeptic, misanthropic, curmudgeonly, parsimonious and unsentimental. Caroline, by contrast, is even-tempered, sweet-natured, charitable, generous and easily moved. Yet paradoxically, I love Christmas, whereas she regards it as a time of year to be endured rather than enjoyed. This inevitably leads to a number of arguments and, as with everything else connected with the festival, they’ve become ritualised.