The whole series is about the loss of innocence. In the first one ['The Sorcerer's Stone'], everyone's very wide-eyed, almost naïve. Harry's thinking that because he's entering a magical world, it's got to be better than the world he's come from. But it's not — it's just got further extremes. It can have extreme joy, but there are also the depths that man can sink to.

The whole series is about the loss of innocence, ... In the first one ['The Sorcerer's Stone'], everyone's very wide-eyed, almost naïve. Harry's thinking that because he's entering a magical world, it's got to be better than the world he's come from. But it's not — it's just got further extremes. It can have extreme joy, but there are also the depths that man can sink to.

Harry Potter and the Sorcerer's Stone,

The fourth one was incredibly, much more so, much more physical than the first ones. It's I think simply the nature of the book that its got those 3 massive tasks in it.

Being at the center of a film is a burden one takes on with innocence -- the first time. Thereafter, you take it on with trepidation.

I had a big crush on her when I first met her, definitely.