Snowpiercer has both [optimistic and pessimistic]. It was essentially optimistic. The most pessimistic was my part, because of his knowledge. He knows how it started. The status quo, he knows, has to be maintained, otherwise there is no chance. He knows that this revolution is completely understandable and is also commendable. He also knows the negatives. In the end, that's not a very positive position to be in.

It's amazing how quickly human beings adapt, isn't it? It was such a great crew, and David [Lynch] was wonderful to work with [on 'The Elephant Man']. It was a very thrilling time, actually.

Elephant Man [movie] was much more difficult physically. This had a couple of days. It was quite tricky. I had my leg strapped up behind me and I am a little older now. It was all marvelous, though. He [Bong Joon-ho] is one of the most fabulous directors in the world.

If you put on an Oscar Wilde [play], it will interest those who are interested in Oscar Wilde. But it won't interest anybody else, because they won't get that wit.

The first film is everything you want to say and how you want to say it. Lots of directors will do that and do it really well, but the second film is not so easy.

I think you can get better in mathematics on a school level, but when you're talking about being a mathematician, I think that's definitely a gift of genes or whatever.

Once you've started to dig a hole, you can't get out of it.