Young people are so infernally convinced that they are absolutely right about everything.

Depression is the most unpleasant thing I have ever experienced. . . . It is that absence of being able to envisage that you will ever be cheerful again. The absence of hope. That very deadened feeling, which is so very different from feeling sad. Sad hurts but it's a healthy feeling. It is a necessary thing to feel. Depression is very different.

Have you any idea how much tyrants fear the people they oppress?

There is no shame in what you are feeling, Harry,' said Dumbledore's voice. 'On the contrary... the fact that you can feel pain like this is your greatest strength.

Hogwarts, Hogwarts, Hoggy Warty Hogwarts, Teach us something please, Whether we be old and bald, Or young with scabby knees, Our heads could do with filling With some interesting stuff, For now they're bare and full of air, Dead flies and bits of fluff, So teach us something worth knowing, Bring us back what we've forgot, Just do your best, we'll do the rest, And learn until our brains all rot.

Professor Flitwick had dried himself off and set Seamus lines ("I am a wizard not a baboon brandishing a stick")

He might have been encased in a thick glass bubble, so separate did he feel from his three dining companions. It was a sensation with which he was only too familiar, that of walking in a giant sphere of worry, enclosed by it, watching his own terrors roll by, obscuring the outside world.