Never try to understand the students. They hate it. They would much rather be tragically misunderstood, wallow in self-pity, stew in their own —” “That’s enough, Phineas,” said Dumbledore.

When Filch wasn't guarding the scene of the crime, he was skulking red-eyed through the corridors, lunging out at unsuspecting students and trying to put them in detention for things like "breathing loudly" and "looking happy.

Warlock D. J. Prod of Didsbury says: “My wife used to sneer at my feeble charms, but one month into your fabulous Kwikspell course and I succeeded in turning her into a yak! Thank you, Kwikspell!

Or perhaps in Slytherin, you'll make your real friends. Those cunning folk use any means to achieve their ends.

When in doubt, go to the library.

One of the many things I learned at the end of that Classics corridor down which I ventured at the age of 18, in search of something I could not then define, was this, written by the Greek author Plutarch: What we achieve inwardly will change outer reality. That is an astonishing statement and yet proven a thousand times every day of our lives. It expresses, in part, our inescapable connection with the outside world, the fact that we touch other people’s lives simply by existing.

Failure is so impor - it doesn't get spoken about enough. We speak about success all the time.