"It's funny because it happened to me when I was so young," Watson tells Sun Media. "You barely notice yourself growing up when it's happening, but I guess that's what has happened, really. It's very peculiar looking back on them and seeing how much I've changed and how much I've grown and what I looked like before all this happened.

"But, in a way, that's what people really identify with. It makes it a real journey -- a very real journey -- because we literally are growing up with the characters."

"For such mainstream entertainment, it has such depth. It is very complex. That's why I wouldn't just call it a kids' book. I would call it an adults' book as well because it genuinely can be read by all ages.

"Everything about the book, everything about J.K. Rowling's world, is thought down to the very last detail. You can pull apart the spells and they're Latin and they actually mean what they're doing. And all the names are so interesting and they're unique and different and everyone has their own history. How she's come up with all of this is just amazing.

"At the end of each book, it's almost like an Aesop's Fable. Every time, every year, there is a lesson that Harry learns, so that the reader in turn learns." With no lectures. "Exactly! So it doesn't feel tiresome."

"I did a film for the BBC, called Ballet Shoes, in the summer. Having an experience outside of Harry Potter really helped me. I think it convinced me that this is where I am meant to be and this is what I'm meant to be doing: That I do want to be an actress.

"But I think I needed to have an experience outside of Harry Potter because, in a way, I was really plucked out of obscurity and given this role. I mean, I really wanted it but it never felt like a decision that I made. It just happened to me. I felt that I won the lottery. So I've always kind of slightly questioned it."