Norman Finkelstein

I had been a Maoist, and then when the Gang of Four was overthrown, I was completely distraught. I was bedridden for three weeks; it was a very painful experience for me. Not only because I had been wrong, but because I felt really embarrassed that I had been lecturing and pontificating with such self-confidence.

I was bashing Israel in the past because nobody else was exposing its true record. Many people are doing it now, so I switched hats from a critic of Israel to a diplomat who wants to resolve the conflict. I have not changed, but I think the spectrum has moved.

Frankly, as much as I love to improvise, it hasn't been difficult to stick to the script on 'Mad Men.' The writing is so precise, and the story so carefully crafted, that I don't think there's room - or need - for ad libbing. I could never come up with dialogue as lovely as these writers do, anyway.

Writing novels is largely about endurance and patience. I take a lot of breaks, hit walls, and go do something else while I think things through. But I do it every day, and I try to treat it as a job, something that is not dictated by whimsy or muses.