It is impossible to live without failing at something, unless you live so cautiously that you might has well not have lived at all, in which case you have failed by default.

I took a wrong turn on the way to the bathroom and found myself in a beautifully proportioned room I had never seen before, containing a really rather magnificent collection of chamberpots. When I went back to investigate more closely, I discovered that the room had vanished. But I must keep an eye out for it. Possibly it is only accessible at five thirty in the morning. Or it may only appear at the quarter moon - or when the seeker has an exceptionally full bladder.

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

Whenever he was in company he wanted to get away, and whenever he was alone he wanted company.

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.

If you made a better rat than a human, it’s not much to boast about, Peter.

A Dream is where a boy can swim in the deepest oceans and fly over the highest clouds.