Like all young people, you are quite sure that you alone feel and think, you alone recognize danger, you alone are the only one clever enough to realise...

Never try to understand the students. They hate it. They would much rather be tragically misunderstood, wallow in self-pity, stew in their own —”

“That’s enough, Phineas,” said Dumbledore.

He sounds exactly like Moody," said Harry quietly, tucking the letter away again inside his robes. "'Constant vigilance!' You'd think I walk around with my eyes shut, banging off the walls....

But Ron was staring at Hermione as though suddenly seeing her in a whole new light.
“Hermione, Neville’s right — you are a girl. . . .”
“Oh well spotted,” she said acidly.

Ron's indignation on his behalf was worth about a hundred points to him.

I'm going to keep going until I succeed — or die. Don't think I don't know how this might end. I've known it for years.