Getting close to books, and spending time by myself, I was obliged to think about things I would never have thought about if I was busy romping around with a brother and sister.
To act with a tennis ball and imagine it's a tentacle, or if you're in some kind of wilderness film and you go, 'Okay, we can't have a grizzly bear here, but imagine when you step over the rock there there's a grizzly bear.' I don't know. They're tough moments.