Chess was the only thing Hermione ever lost at, something Harry and Ron thought was very good for her.

If you want to see the true measure of a man, watch how he treats his inferiors, not his equals.

Read as much as you possibly can. Nothing will help you as much as reading.

Why can’t I drink the potion instead?” asked Harry desperately. “Because I am much older, much cleverer, and much less valuable,” said Dumbledore.

Merlin’s beard, what is Xenophilius Lovegood wearing? He looks like an omelet.

They run off eckeltricity, do they?" he said knowledgeably. "Ah yes, I can see the plugs. I collect plugs," he added to Uncle Vernon. "And batteries. Got a large collection of batteries.

They don’t need walls and water to keep the prisoners in, not when they’re trapped inside their own heads, incapable of a single cheerful thought. Most go mad within weeks - Lupin