Harry Potter y la Orden del Fénix

A veces la indiferencia y la frialdad causan mucho más daño que la aversión declarada.

...cualquier cosa es posible si tienes suficiente coraje...

Una inteligencia sin límites es el mayor tesoro de los hombres.

Harry: No, Hermione. No lo soy. Enfrentarse a esas cosas en la vida real, no es como en el colegio. En clase cometes un error y puedes intentarlo nuevamente, pero ahí fuera cuando estás a un segundo de ser asesinado, o viendo como muere un amigo ante tus propios ojos. No sabéis lo que es eso…

Youth cannot know how age thinks and feels. But old men are guilty if they forget what it was to be young.

That's what they should teach us here, he thought, turning over on to his side, how girls' brains work... it'd be more useful than Divination, anyway...

'One person can't feel all that at once, they'd explode.'
'Just because you've got the emotional range of a teaspoon doesn't mean we all have' said Hemione nastily.

Harry arrived early in the Room of Requirement for the last DA meeting before the holidays and was very glad he had, because when the torches burst into flame he saw that Dobby had taken it upon himself to decorate the place for Christmas. He could tell the elf had done it, because nobody else would have strung a hundred golden baubles from the ceiling, each showing a picture of Harry's face and bearing the legend: HAVE A VERY HARRY CHRISTMAS!

'And it's Johnson - Johnson with the Quaffle, what a player that girl is, I've been saying it for years but she still won't go out with me -'
'JORDAN' yelled Professor McGonagall.
'- just a fun fact, Professor, adds a bit of interest -'

'Is it true that you shouted at Professor Umbridge?'
'Yes' said Harry.
'You called her a liar?'
'Yes.'
'You told her He Who Must Not Be Named is back?'
'Yes.'
Professor McGonagall sat down behind her desk, frowning at Harry. Then she said, 'Have a biscuit , Potter.'