That's what they should teach us here. How girls' brains work... It would be more useful than divination, anyway...

Parvati positively beamed. Harry could tell that she was feeling guilty for having laughed at Hermione in Transfiguration. He looked around and saw that Hermione was beaming back, if possible even more brightly. Girls were very strange sometimes.

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.