I'm not that tough; I'm not that smart. I need life telling me who I am, showing me my mind constantly. I wouldn't see it in a cave.
Whenever you deal with science fiction you are setting up a world of rules. I think you work hard to establish the rules. And you also have to work even harder to maintain those rules, and within that find excitement and unpredictability and all that stuff.
I recently found out about this other super movie star. He only works from about 11:00 to 4:00, so all his movies take like 120 days. But this was a lot of stuff to do in 35 days.