Casting is great fun, except for the business of it. I love the casting process. I love the editing process. I love working with the music. And even prep is very exciting. But once you get there and the clock is ticking, all it is is stress.

I mean, I don't want to sound - of course it's very nice, people come up and say appreciative things about my work. But the loss, in terms of privacy and anonymity, is no small thing to me.

All I mean is, I'm not the kind of audience comedy directors want at a test screening because I seldom laugh, and if I do, it's not very loud. That doesn't mean I don't like the movie.

Part of it has to do with this business of being approached in public. I have a distinctive look - it's partly the glasses I wear - and people seem to remember me once they've seen me.

What makes me put pen to paper? You know, that's the million-dollar question. I've been writing since I've been reading. It's not a question I think that's even meant to be answered, but it's something you always seek to discover the answer to. And the process of filmmaking is one of discovery, and self-discovery at that. Pleasure... it's not exactly what I would call fun, but it's absorbing.

I think, in fact, there's a plus and a minus to knowing my prior work, Happiness and so forth. The plus is of course you can see how I play with the characters, the storylines, and the way things play off each other. And the minus is that it makes you a little bit more self-conscious, that you're not able to enter the movie as it exists and lives and breathes, because you're so busy making references, connections that you're not able to release yourself from and take the film on your own terms.

Narcissism and self-deception are survival mechanisms without which many of us might just jump off a bridge.