I have made 70 or so films. In all my films not a single actor, a single extra, was hurt. Not one. So statistics are on my side when I say I'm clinically sane.

I was able to persuade them to let me shoot in areas that were beyond the volcano itself. Beyond the joint scientific program between Cambridge University and North Korean scientists. I was able to film in a kindergarten, subway, other things you would not normally be allowed to do.

That shot in "Into the Inferno" somehow popped up while my editor and I were viewing the footage. I immediately said, "That looks like the opening shot because the camera approaches the action very slowly and we have enough time to insert some of the main credits into it." So it was a practical choice. At the same time, you see these tiny figures standing at the rim of something, and all of a sudden, the camera rises further and you find yourself looking straight down into an inferno.

If you do not have an absolutely clear vision of something, where you can follow the light to the end of the tunnel, then it doesn't matter whether you're bold or cowardly, or whether you're stupid or intelligent. Doesn't get you anywhere.

Otherwise you have to repeat a lot when you're filming. And I've seen the film and it's in a border town in Mexico close to the border with the United States, so of course you have a lot of traffic and noise and dogs barking right nearby, and for that you have to repeat a lot and Robert Rodriguez didn't do that. Smart, smart, smart, you better have smarts also.

There is a fascination about crime, which is understandable, but hardly anyone talks about the families of victims of violent crime and the devastation that is beyond the victim alone.

We were very, very lucky [with Tim White filmed making historic discoveries in the East African Rift ] . In 100 years, only three skeletal remains [of early man] were ever found at this site. This was the third one, and we were right there when it happened. In fact, when I first heard they had found something, I said, "Please stop it! Don't do anything right now. Let's do it tomorrow until we have unpacked our cameras and assembled our stuff.