Everything had shattered. The fact that it was all still there โ the walls and the chairs and the childrenโs pictures on the walls โ meant nothing. Every atom of it had been blasted apart and reconstituted in an instant, and its appearance of permanence and solidity was laughable; it would dissolve at a touch, for everything was suddenly tissue-thin and friable.
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