Some of the most important caves, like Lascaux in the Dordogne region in France, have had to be closed down. There had been too many people allowed in, and they left a mold on the walls that is spreading and which can't really be stopped.

Perseverance has kept me going over the years. Things rarely happen overnight. Filmmakers should be prepared for many years of hard work. The sheer toil can be healthy and exhilarating.

North Korea is not an exception. Even there, where you think it would be completely sober, they have the myth of their revolution being connected to the volcano.

Technology has a great advantage in that we are capable of creating dinosaurs and show them on the screen even though they are extinct 65 million years. All of a sudden, we have a fantastic tool that is as good as dreams are.

When I see a face, I see a face in general and I see you are curious, I see the curiosity but I don't not look after a dermatological report of your cheeks, and that's what you see when you're too high-resolution. And now desperately in post-production, in color grading, they are trying to wipe out the precision of the dermatological report.

I always had a feeling, for example, that there should be something from Verdi's "Requiem" in the film. You hear it when you see the lava flow in Iceland. That turned out to be a very easy choice.

I know whenever it comes to be really dysfunctional and vile and base and hostile on screen, I'm good at that.