It's an ugly thing to see ambition and to see people satisfying themselves.

The other thing - and writers can say whatever they want - is casting. You need to find a person who can inhabit that role, who can not sugarcoat the bad stuff, and not be too hard on the good stuff, but who can come across as a three-dimensional human being with some depth and some thought about what they're doing. When you find James Gandolfini or Jon Hamm, someone who can inhabit this role but still has a natural humanity to them, no matter what they're doing? It's a gift.

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.

Identity is part of drama to me. Who am I, why am I behaving this way, and am I aware of it?

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.

You don't drink and smoke that much, and womanize that much, unless you really want to be punished, I think.

But you know what, honestly? I'm not that interested in advertising. I think it's a great way... It's such a huge part of our culture. It's like saying, "Are you interested in hair?" It's such a part of our life, and it's such a reflection of how we feel about ourselves, and what we're interested in, and what we want to be.