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.

When the camera is looking back at our planet Earth, it's the tiniest of specks somewhere out there in the universe. So we do have a new sense of proportion. Of course the volcanoes and the magma under us just remind us of that.

In Germany, you would be hanged if you cracked a joke about Hitler and you would be killed by the state if you were insane in a project of euthanasia.

It's very strange, for example, in North Korea where the volcano at the Chinese border is some sort of the mythical birthplace of the Korean people.

There's happens to be a volcano in the vicinity and there's some talk about a volcano as well, so that's the title Salt and Fire

I think I would be a good villain in a James Bond movie.

Everything that I've done was prudent and never has anyone gotten hurt in my films - not a single actor, not a single extra, ever.