I sometimes find, and I am sure you know the feeling, that I simply have too many thoughts and memories crammed into my mind. “At these times, I use the Pensieve. One simply siphons the excess thoughts from one’s mind, pours them into the basin, and examines them at one’s leisure. It becomes easier to spot patterns and links, you understand, when they are in this form.

However,' said Dumbledore, speaking very slowly and clearly so that none of them could miss a word, 'you will find that I will only truly have left this school when none here are loyal to me. You will also find that help will be given at Hogwarts to those who ask for it.

Hagrid looked down at his umbrella and scratched his beard. 'Shouldn'ta lost me temper,' he said ruefully, 'but it didn't work anyway. Meant ter turn him into a pig, but I suppose he was so much like a pig anyway there wasn't much left ter do.

I took a wrong turn on the way to the bathroom and found myself in a beautifully proportioned room I had never seen before, containing a really rather magnificent collection of chamberpots. When I went back to investigate more closely, I discovered that the room had vanished. But I must keep an eye out for it. Possibly it is only accessible at five thirty in the morning. Or it may only appear at the quarter moon - or when the seeker has an exceptionally full bladder.

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

But I don’t think I’ve ever known such a natural at Potions!” said Slughorn. “Instinctive, you know — like his mother! I’ve only ever taught a few with this kind of ability, I can tell you that, Sybill — why even Severus —” And to Harry’s horror, Slughorn threw out an arm and seemed to scoop Snape out of thin air toward them.

In truth, I never consider the audience for whom I'm writing. I just write what I want to write.