The royal family's existence is a constant reminder of the hollowness of John Major's rhetoric, and idiotic statements by its leading members a constant boost to the republican cause. They're fine opening hospitals. It's when they open their mouths they get into trouble.

My closest friend, who died not long ago, is buried near Marx's grave in Highgate cemetery, so I see the gaggle of admirers laying roses at the foot of his tombstone regularly. I have never been tempted to leave flowers there myself. Great theories, shame about the practice. Marx did many things. But inventing class was not one of them.

I do think it's strange that I get associated with Iraq more than the people who were Foreign Secretary or Defence Secretary. It's because of my closeness to Tony [Blair], which I don't regret at all. I think that was a privilege.

In an ideal world, it would not take a film star to get the media focused on mental illness.

Friends have suggested that I am the least qualified person to talk about happiness, because I am often down, and sometimes profoundly depressed. But I think that's where my qualification comes from. Because to know happiness, it helps to know unhappiness.

I used to be very routine-based and the new thing in my life is not having a clear, full-time existence.

As Tony [Blair] said in his book, Gordon [Brown] was brilliant and impossible. If he'd just been one of those things, the options are obvious.