J.K. Rowling

Your mother died to save you. If there is one thing Voldemort cannot understand, it is love. He didn't realize that love as powerful as your mother's for you leaves its own mark.

Longbottom, if brains were gold you'd be poorer than Weasley, and that's saying something.

I tell you, that dragon's the most horrible animal I've ever met, but the way Hagrid goes on about it, you'd think it was a fluffy little bunny rabbit. When it bit me he told me off for frightening it. And when I left, he was singing it a lullaby.

I don’t go looking for trouble. Trouble usually finds me!

To the well-organized mind, death is but the next great adventure.

Malfoy's got detention! I could sing!

There is no good and evil, there is only power, and those too weak to seek it …

They don't know we're not allowed to use magic at home. I'm going to have a lot of fun with Dudley this summer...'

'You haven't got a letter on yours,' George observed. 'I suppose she thinks you don't forget your name. But we're not stupid — we know we're called Gred and Forge.'

'There was a lot more to magic, as Harry quickly found out, than waving your wand and saying a few funny words.'

'Fred, you next,' the plump woman said.

'I'm not Fred, I'm George,' said the boy. 'Honestly, woman, you call yourself our mother? Can't you tell I'm George?'

'Sorry, George, dear.'

'Only joking, I am Fred.'

'Don't play,' said Hermione at once.

'Say you're ill,' said Ron.

'Pretend to break your leg,' Hermione suggested.

' Really break your leg,' said Ron to Harry when they heard Snape was going to be the referee for the Quidditch match.