J.K. Rowling

Mr. Moony presents his compliments to Professor Snape, and begs him to keep his abnormally large nose out of other people's business.
Mr. Prongs agrees with Mr. Moony, and would like to add that Professor Snape is an ugly git.
Mr. Padfoot would like to register his astonishment that an idiot like that ever became a professor.
Mr. Wormtail bids Professor Snape good day, and advises him to wash his hair, the slimeball.

There is a huge appeal, and I try to show this in the Potter books, to black and white thinking.
It's the easiest place to be and in many ways it's the safest place to be. If you take an all-or-nothing position on anything, you will definitely find comrades, you will easily find a community. "I’ve sworn allegiance to this one simple idea."
What I've tried to show in the Potter books, and what I feel strongly myself, is that we should mistrust ourselves most when we are certain.

Is 'fat' really the worst thing a human being can be? Is 'fat' worse than 'vindictive', 'jealous', 'shallow', 'vain', 'boring' or 'cruel'? Not to me.

"Don't talk to me."
"Why not?"
"Because I want to fix that in my memory for ever. Draco Malfoy, the amazing bouncing ferret..."

But, as many women have said before me, 'woman' is not a costume. 'Woman' is not an idea in a man's head. 'Woman' is not a pink brain, a liking for Jimmy Choos or any of the other sexist ideas now somehow touted as progressive. Moreover, the 'inclusive' language that calls female people 'menstruators' and 'people with vulvas' strikes many women as dehumanising and demeaning. I understand why trans activists consider this language to be appropriate and kind, but for those of us who've had degrading slurs spat at us by violent men, it's not neutral, it's hostile and alienating.

It does not do to dwell on dreams and forget to live.

Holey? You have the the whole world of ear-related humor before you, you go for holey?

He was my mum and dad's best friend. He's a convicted murderer, but he's broken out of wizard prison and he's on the run. He likes to keep in touch with me, though...keep up with my news...check if I'm happy...

The Internet doesn’t just offer opportunities for misogynistic abuse, you know. Penis enlargers can also be bought discreetly.

Yeah, Quirrell was a great teacher. There was just that minor drawback of him having Lord Voldemort sticking out of the back of his head!

"We'll be there, Harry," said Ron
"What?"
"At your Aunt and Uncle's house," said Ron, "And then we'll go with you wherever you're going."
"No-" said Harry quickly; he hadn't counted on this, he had meant them to understand that he was undertaking the most dangerous journey alone.
"You said it once before," said Hermione quickly, "that there was time to turn back if we wanted to. We've had time, haven't we? We're with you whatever happens."

Things we lose have a way of coming back to us in the end, if not always in the way we expect.

I spoke up about the importance of sex and have been paying the price ever since. I was transphobic, I was a cunt, a bitch, a TERF, I deserved cancelling, punching and death.

One of the many things I learned at the end of that Classics corridor down which I ventured at the age of 18, in search of something I could not then define, was this, written by the Greek author Plutarch: "What we achieve inwardly will change outer reality."
That is an astonishing statement and yet proven a thousand times every day of our lives. It expresses, in part, our inescapable connection with the outside world, the fact that we touch other people’s lives simply by existing.

"Why were you lurking under our window?"
"Yes - yes, good point, Petunia! What were you doing under our windows, boy?"
"Listening to the news," said Harry in a resigned voice.
His aunt and uncle exchanged looks of outrage.
"Listening to the news! Again?"
"Well, it changes every day, you see," said Harry.