The most important thing is to read as much as you can, like I did. It will give you an understanding of what makes good writing and it will enlarge your vocabulary.

Power was my weakness and my temptation.

I've got two daughters who will have to make their way in this skinny-obsessed world, and it worries me, because I don't want them to be empty-headed, self-obsessed, emaciated clones; I'd rather they were independent, interesting, idealistic, kind, opinionated, original, funny – a thousand things, before 'thin'. And frankly, I'd rather they didn't give a gust of stinking chihuahua flatulence whether the woman standing next to them has fleshier knees than they do. Let my girls be Hermiones, rather than Pansy Parkinsons. Let them never be Stupid Girls.

I've wanted to be an author as long as I can remember. English was always my favorite subject at school, so why I went on to do a degree in French is anyone's guess.

Worst that can happen is Hagrid’ll have to get rid of the skrewts. Sorry ... did I say worst? I meant best.

I always advise children who ask me for tips on being a writer to read as much as they possibly can. Jane Austen gave a young friend the same advice, so I'm in good company there.

I can teach you how to bottle fame, brew glory, even put a stopper on death.