For old actors, just remember that inside you're only 14. Acting is for kids. You poor old grown-ups, you've forgotten how to do what kids know automatically.

You always think that 70 is the end of the road: 'Somebody died when they were 73; good life'. You're closer to death, and you better make sure you don't waste too much of your time doing things you don't want to do. No point in saying things you don't believe in.

Some directors don't tell you that it's not your fault, so you get increasingly depressed that you're not delivering what's required, and then you discover it's not you at all, it's something in the background that's out of focus.

2D looks so flat. Well, it is, of course, it's flat. But 3D isn't. And for an adventure story that takes you into a long-distant, fictional world, it's ideal, I think.

In the theatre, the actor is in total control. The director wasn't in the house last night, the designer wasn't there, the author's dead. It's just us and the audience.

I'm cheaper than Anthony Hopkins. The other actors they asked to play Gandalf wouldn't go to New Zealand on that money for that length of time. I thought it would be a bit of an adventure. Tony Hopkins didn't think it would be an adventure. Tony is part of Hollywood. I'm an eccentric English actor, and there's a lot of us around.

There's no sex in Middle Earth.