I am proud of having done what I've done. Very proud.

But in some ways I think it's braver to do it like this. And, to an extent, you know what? The worst that can happen is that everyone says, 'Well, that was dreadful, she should have stuck to writing for kids' and I can take that. So, yeah, I'll put it out there, and if everyone says, 'Well, that's shockingly bad – back to wizards with you', then obviously I won't be throwing a party. But I will live. I will live.

I cared more about your happiness than your knowing the truth, more for your peace of mind than my plan, more for your life than the lives that might be lost if the plan failed. In other words I acted exactly as Voldemort expects we fools who love to act.

Failure is so important. We speak about success all the time. It is the ability to resist failure or use failure that often leads to greater success. I've met people who don't want to try for fear of failing.

If you love something - and there are things that I love - you do want more and more and more of it, but that's not the way to produce good work.

Print will never die. There's no substitute for the feel of an actual book. I adore physically turning pages, and being able to underline passages and not worrying about dropping them in the bath or running out of power. I also find print books objects of beauty.

Ooh, you look much tastier than Crabbe and Goyle, Harry" said Hermione, before catching sight of Ron's raised eyebrows, blushing slightly and saying "oh you know what I mean - Goyle's Potion looked like bogies.