Never trust anything that can think for itself if you can't see where it keeps its brain.

Dementors are among the foulest creatures that walk this earth. They infest the darkest, filthiest places, they glory in decay and despair, they drain peace, hope, and happiness out of the air around them. Even Muggles feel their presence, though they can’t see them. Get too near a Dementor and every good feeling, every happy memory will be sucked out of you. If it can, the Dementor will feed on you long enough to reduce you to something like itself — soul-less and evil. You’ll be left with nothing but the worst experiences of your life.

Will there ever be an encyclopedia? Possibly. I would say two things about the encyclopedia: firstly, I’ve always said and I stand by it, whenever I do do a printed encyclopedia I would like all the proceeds to go to charity. Back in 1998 I never dreamt I personally I would be in the position that I could set up a large charitable foundation and personally do things for charity, and I’ve done other charity books already.

And anyway, life's too short.

Honestly, I think we should be delighted people still want to read, be it on a Kindle or a Nook or whatever the latest device is.

Failure means a stripping away of the inessential.

Ah" said Dumbledore gently, "Yes I thought we might hit that little snag!" "Snag?" said Fudge, his voice still vibrating with joy. "I see no snag, Dumbledore!" "Well," said Dumbledore apologetically, "I'm afraid I do." "Oh, really?" "Well it's just that you seem to be labouring under the delusion that I am going to -- come quietly. I am afraid I am not going to come quietly at all, Cornelius. I have absolutely no intention of being sent to Azkaban. I could break out, of course -- but what a waste of time, and frankly, I can think of a whole host of things I would rather be doing.