Wanting to be a good actor is not good enough. You must want to be a great actor. You just have to have that.

Your own barometer is all you have to go by, and often what makes a good director is knowing when not to say something. On occasions you can find yourself on a film set where the person who is wearing the director's hat is only trying to justify his position.

But you see, I have played more good guys than I have played villains.

How many movies do you see when you can say this director really knew what film he wanted to make? I can count them on the fingers of one hand.

I'm rarely asked to play the smartest man in the room.

Political correctness has become a straightjacket.

And of course I've got kids of my own now, and they love me being in the Harry Potter films. I'm now part of a phenomenon. You become incredibly cool to your kids, and you get a young fan base. So you became the cool dad at school. You're suddenly hip.