I would never make a political disagreement the cause of a quarrel with a friend. I think it’s silly to do that. But there is a tendency on the left—and I bet there are people here who know what I’m talking about—to think that if someone in any way disagrees with the left, it must be for the lowest possible reason, and that if you’ve found the lowest possible motive, you’ve found the right one. There’s this whole culture of: no one would leave us or quarrel with us if they weren’t a sellout. It’s actually a very sick mentality, and very widespread, and people who think like that or feel like that can dump me if they want, but that’s almost to as much as to say that they weren’t much of a friend.