Making the films is never easy, but actually that aspect of trying to make a better film or to keep the standard high is something that comes organically.

Because actually it's really hard to get things made. It takes years. To fight the fights you inevitably have to fight, even when you've produced Harry Potter, you'd better have the commitment and the passion to knock down walls, not take no for an answer.

I'm interested in making films of all sizes. During this time I've made a film called 'The Boy in the Striped Pajamas', which is a modest-sized film. I was involved in 'I Am Legend' and 'Yes, Man', but 'Potter' is unique. There'll never be anything like 'Potter' again.

I love books. I read voraciously, and I happened to have been fortunate to have been in the right place at the right time.

The most important thing is that you have to have the visual effects working for you, instead of you working for the visual effects.

The films you're making have to be faithful to the material.

I look forward to having the time and the opportunity to take on new challenges, but I'm also aware that I've loved every minute of the 'Potter 'experience: to make films for an enthusiastic audience and work with great material.