When the invasion of Iraq was first debated, one couldn't fail to notice the preponderance of left-wing men of a certain age who came out in support of the war. Radicals as adults, but often from conservative backgrounds, now beginning to confront their own mortality, and preoccupied by masculinity and legacy, their palpable thrill about military might suggested that, deep down, they secretly feared progressive principles were for pussies. Now here was their chance, before it was too late, to prove their manhood.

In 2006, Hitchens' wife, the American writer Carol Blue, told the New Yorker her husband was one of "those men who were never really in battle and wished they had been. There's a whole tough-guy, 'I am violent, I will use violence, I will take some of these people out before I die' talk, which is key to his psychology – I don't care what he says. I think it is partly to do with his upbringing."

Is there any truth in what his wife said? He pauses for a second. Then, unexpectedly: "Yeah. Yes. One of the things I've realised, writing the book, is that it has to be true."

... For someone feted for his adversarial prowess, I'm surprised by how often he sabotages an argument with a lurch into self-indulgence. For example, he has written at length about the failings of Guantánamo Bay. But then he says to me, "Guantánamo slightly threatened at one point to change my attitude towards capital punishment. I thought it would have been good if some of those people could have been taken out and shot. Yeah, put up against a wall. Lincoln would have done it. Of course, I would have been against it if they had. But that's how I felt."...

It seems to me so evidently the case that Hitchens is an alcoholic that to say much more feels unnecessary. But for the record, he trots out all the usual self-serving, defensive evasions: "For me, an alcoholic is someone who can't hold his drink" or, "I'm not dependent, but I'd prefer not to be without it." The longest he has ever been was a dry weekend "in fucking Libya", and he claims he drinks only to make other people less boring. So, presumably, he doesn't drink when he's with Amis? "Er, yuh, I do.",,,

"I've got arguments!" (he said)

He certainly has. Quite how they've earned Hitchens his status as a legend, however, I am at a loss to say. Posing himself the Proust questionnaire in his memoir, he answered the question, "What is your most marked characteristic?" with "Insecurity" and says this surprised him, but I'm not sure why, because all the decades of showy erudition and aggressive rhetoric look a lot like camouflage for a deep and heartbreaking fear of not quite measuring up.'