Professor, 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. RowlingIt's going to be all right, sir," Harry said over and over again, more worried by Dumbledore's silence than he had been by his weakened voice. "We're nearly there ... I can Apparate us both back ... don't worry ..." "I am not worried, Harry," said Dumbledore, his voice a little stronger despite the freezing water. "I am with you.
J. K. RowlingAnd they'd [the Death Eaters] love to have me," said Harry sarcastically. "We'd be best pals if they didn't keep trying to do me in.
J. K. Rowling