Acting is about giving something away, handing yourself over to whatever role you are asked to play. I'm not hiding or escaping or seeking anonymity. I reserve the right not to have a rubber stamp on my forehead saying this is who I am. Because who I am gets in the way of people looking innocently at the parts I play.
There's, like, marks next to an actor's name or something, and boy does that go up and down! Somewhere in there, which always causes my mate Miss Ruby Wax great hilarity, I was offered a biopic of Frank Sinatra. Even I knew that was a bad idea! They'll throw anything at you at certain times. So, you know, to thine own self be true.
I approach every part I'm asked to do and decide to do from exactly the same angle: who is this person, what does he want, how does he attempt to get it, and what happens to him when he doesn't get it, or if he does?
Three children have become adults since a phone call with Jo Rowling, containing one small clue, persuaded me that there was more to Snape than an unchanging costume, and that even though only three of the books were out at that time, she held the entire massive but delicate narrative in the surest of hands.
I'm very aware that when one is acting in the theater, you do become kind of animal about it. And you're reliant on instincts rather than tact a lot of the time.
I've learned, having been on a lot of sets, the good news is that by definition you are surrounded by experts. They get fired if they're not - unlike in the theatre!