You are confronted with abysses of time that are, in a way, unfathomable. You see a painting in charcoal of raindeer and it was left unfinished and somebody else finished it. But through radio carbon dating we know that the next one completed the painting 5,000 years later. You're just blown away by the notion of passage of time. We have no relationship to that kind of depth of time.

We are just a blip. I found it very interesting when Clive [Oppenheimer] interviewed the Ethiopian scientists and asked them, "Do we have another 100,000 years?" In their calculation, mankind will be entering a very critical phrase a thousand years from now.

I'm one of the few reading and thinking people who loves Las Vegas for the vulgarity and omnipresence of the dream. The collective dream. There's something enormous about it. Let me say one thing: Las Vegas and cinema have similar roots. The country fair. The magician at the country fair. The vulgarity of the country fair.

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.

The danger is to stupidly believe that depicting facts gives us much insight. If facts were the only thing that counted, the telephone directory would be the book of books.

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.

I doubt that VR will really replace the quality of books. If you want to go into let's say the Prado in Madrid and you want to go into Hieronymus Bosch or whatever, you'd rather go into books and you take your time and it's sitting there all day long and you go back and revisit it and it becomes part of your physical life.