Our Headmaster is taking a short break," said Professor McGonagall, pointing at the Snape-shaped hole in the window.
J. K. RowlingThere you go, Harry!โ Ron shouted over the noise. โYou werenโt being thick after all โ you were showing moral fiber!
J. K. RowlingProfessor, why couldn't we just Apparate directly into your old colleague's house?' 'Because it would be quite as rude as kicking down the front door,' said Dumbledore. 'Courtesy dictates that we offer fellow wizards the opportunity of denying us entry.
J. K. Rowling