The weirdest thing with friends, the way you measure it is if you go without communicating for months at a time, you can sit down and within five seconds be right where you were. I know it's a cliché, but quality not quantity, and that bond will not disintegrate. It does need to be tended to but it won't go away. It's amazing, though - I'm here in New York where my best friend from college lives, and we see each other twice a year and we're right where we were and a lot of it's unspoken.

If you've ever had somebody try to sell you something - people who can sell, they really are not manipulating you. They are selling themselves.

On the set, I visit the set for a lot of the rehearsals, and there's always a writer on set. And then I'm involved in post-production, very intensely involved in editing, and the sound mix and color timing. Really, I have about nine jobs.

It's very hard to turn writers against each other, believe it or not.

It took seven years from the time I wrote Mad Men until it finally got on the screen. I lived every day with that script as if it were going to happen tomorrow. That’s the faith you have to have.

Every single word that's on the screen, I oversee. There's nothing that's shot, I'm not involved in. The scripts go through multiple drafts, and I work with the writers on all these things. And I'm extremely involved in the writing process.

The chance to tell personal, language-specific, culturally specific stories is really flourishing on TV and I think it's just the nature of movies and international demands that you need to get a much bigger audience. TV is more like independent film was. The forms of adult drama and certain kinds of sophisticated comedy, there's no room for them in the tentpole movie universe.