First sign of madness, talking to your own head.

There will always be a easy path and a right path.

Ah! Bertie Bott’s Every Flavor Beans! I was unfortunate enough in my youth to come across a vomit-flavored one, and since then I’m afraid I’ve rather lost my liking for them — but I think I’ll be safe with a nice toffee, don’t you?” He smiled and popped the golden-brown bean into his mouth. “Alas! Ear wax!

Harry witnessed Professor McGonagall walking right past Peeves who was determinedly loosening a crystal chandelier and could have sworn he heard her tell the poltergeist out of the corner of her mouth 'It unscrews the other way.

The world had ended, so why had the battle not ceased, the castle fallen silent in horror, and every combatant laid down their arms?

One can never have enough socks," said Dumbledore. "Another Christmas has come and gone and I didn't get a single pair. People will insist on giving me books.

It's the same story with a few crucial additions; the most important one is you.