Imperfect understanding is often more dangerous than ignorance.

Imperfect understanding is often more dangerous than ignorance.

I am a wizard, not a baboon brandishing a stick.

Do not pity the dead, Harry. Pity the living, and, above all those who live without love.

We Slytherins are brave, yes, but not stupid. For instance, given the choice, we will always choose to save our own necks.

Percy wouldn't notice a joke if it danced naked in front of him wearing one of Dobby's hats.

Merlin’s beard, Harry, you made me jump,” said Slughorn, stopping dead in his tracks and looking wary. “How did you get out of the castle?” “I think Filch must’ve forgotten to lock the doors,” said Harry cheerfully, and was delighted to see Slughorn scowl.