Maggie Smith has a unique sense of comedy, based on a somewhat ironic view of real life, making it both funnier and more sad. But perhaps her greatest ability, or at least the one that most intrigues me, is how she can convey deep and powerful emotion without a trace of sentimentality.

In my defence I can only say that her past, too, like mine, like everyone's in fact, was a locked box. Occasionally we allow people a peep, but generally only at the top level. The darker streams of our memories we negotiate alone.

I have derived enormous confidence from being a husband and father.

Every writer has to make an emotional journey from artist sitting in attic to being part of a business. The writer of a film is like Tinkerbell. You are only there because people believe in you. The moment they dont, because youre a pain the arse, youve lost.

Most of the soap operas always use the Christmas special to kill huge quantities of their characters. So they have trams coming off their rails, or cars slamming into each other or burning buildings. It's a general clean-out.

You see, in America, it's quite standard for an actor to sign, at the beginning of a series, for five or seven years. The maximum any British agent will allow you to have over an actor is three years.

I think every period - except for the 14th century, or something - has some merits.