We've all got both light and dark inside us. What matters is the part we choose to act on. That's who we really are.

Think your little jokes'll help you on your deathbed?" she jeered. "Jokes? No,no, these are manners," replied Dumbledore.

The idea of a teenage Dumbledore was simply odd, like trying to imagine a stupid Hermione or a friendly Blast-Ended Skrewt.

'Tell me one last thing,' said Harry. 'Is this real? Or has this been happening inside my head?' Dumbledore beamed at him, and his voice sounded loud and strong in Harry's ears even though the bright mist was descending again, obscuring his figure. 'Of course it is happening inside your head, Harry, but why on earth should that mean it is not real?'

I expect what you're not aware of would fill several books, Dursely.

Now, it is the view of the Ministry that a theoretical knowledge will be more than sufficient to get you through your examination, which, after all, is what school is all about.

Which way did they go, Peeves?" Filch was saying. "Quick, tell me." "Say 'please.'" "Don't mess with me, Peeves, now where did they go?" "Shan't say nothing if you don't say please," said Peeves in his annoying singsong voice. "All right- PLEASE." "NOTHING! Ha haaa! Told you I wouldn't say nothing if you didn't say please! Ha ha! Haaaaaa!" And they heard the sound of Peeves whooshing away and Filch cursing in rage.