I've never wanted to be a witch, but an alchemist, now that's a different matter. To invent this wizard world, I've learned a ridiculous amount about alchemy. Perhaps much of it I'll never use in the books, but I have to know in detail what magic can and cannot do in order to set the parameters and establish the stories' internal logic.
J. K. RowlingIt sort of floated toward me,โ said Ron, illustrating the movement with his free index finger, โright to my chest, and then โ it just went straight through. It was here,โ he touched a point close to his heart, โI could feel it, it was hot. And once it was inside me I knew what I was supposed to do, I knew it would take me where I needed to go. So I Disapparated and came out on the side of a hill. There was snow everywhere. . . .
J. K. RowlingNo, nothing,' said Dumbledore, and a great sadness filled his face. 'The time is long gone when I could frighten you with a burning wardrobe and force you to make repayment for your crimes. But I wish I could, Tom... I wish I could.
J. K. RowlingDid you like question ten, Moony?" asked Sirius as they emerged into the entrance hall. "Loved it," said Lupin briskly. "Give five signs that identify the werewolf. Excellent question." "D'you think you managed to get all the signs?" said James in tones of mock concern. "Think I did," said Lupin seriously, as they joined the crowd thronging around the front doors eager to get out into the sunlit grounds. "One: He's sitting on my chair. Two: He's wearing my clothes. Three: His name's Remus Lupin.
J. K. Rowling