They donโt need walls and water to keep the prisoners in, not when theyโre trapped inside their own heads, incapable of a single cheerful thought. Most go mad within weeks - Lupin
J. K. RowlingDumbledore was on his feet again, pale as any of the surrounding Inferi, but taller than any too, the fire dancing in his eyes; his wand was raised like a torch and from its tip emanated the flames, like a vast lasso, encircling them all with warmth.
J. K. RowlingThis group had a kind of dark glamour within the castle. They were a motley collection; a mixture of the weak seeking protection, the ambitious seeking some shared glory, and the thuggish gravitating toward a leader who could show them more refined forms of cruelty.
J. K. RowlingMiss Granger, you foolish girl, how could you think of tackling a mountain troll on your own? Five points will be taken from Gryffindor for this,โ said Professor McGonagall. โIโm very disappointed in you.โ Hermione left. Professor McGonagall turned to Harry and Ron. โWell, I still say you were lucky, but not many first years could have taken on a full-grown mountain troll. You each win Gryffindor five points.
J. K. Rowling