Harry Potter and the Order of the Phoenix

Fools who wear their hearts proudly on their sleeves, who cannot control their emotions, who wallow in sad memories and allow themselves to be provoked so easily

Well, we in Ravenclaw think he’s a bit of a joke,” said Luna, unlazed.
“You’ve got a rubbish sense of humour then,” Ron snapped

According to Madam Pomfrey, thoughts could leave deeper scarring than almost anything else

“The thing about growing up with Fred and George,” said Ginny thoughtfully, “is that you sort of start thinking anything’s possible if you’ve got enough nerve.”

SO YOU THINK YOU’D LIKE TO WORK IN MUGGLE RELATIONS? “You don’t seem to need many qualifications to liaise with Muggles. . . . All they want is an O.W.L. in Muggle Studies . . . ‘Much more important is your enthusiasm, patience, and a good sense of fun!’”
“You’d need more than a good sense of fun to liaise with my uncle,” said Harry darkly.

“Just because you’ve got the emotional range of a teaspoon doesn’t mean we all have,” said Hermione nastily, picking up her quill again.

October extinguished itself in a rush of howling winds and driving rain and November arrived, cold as frozen iron

“She’s an awful woman,” said Hermione in a small voice. “Awful. You know, I was just saying to Ron when you came in . . . we’ve got to do something about her.”
“I suggested poison,” said Ron grimly.

“Hem, hem.”
“I wonder,” said Professor McGonagall in cold fury, turning on Professor Umbridge, “how you expect to gain an idea of my usual teaching methods if you continue to interrupt me? You see, I do not generally permit people to talk when I am talking.”
Professor Umbridge looked as though she had just been slapped in the face.

“Poisonous toadstools don’t change their spots,” said Ron sagely