“Courtesy dictates that we offer fellow wizards the opportunity of denying us entry.”
“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.”
“Common courtesy dictates that we never drain the lifeblood of anyone to whom we've been formally introduced.”
“Technology offers us a unique opportunity, though rarely welcome, to practice patience.”
“He is a mysterious and captivating fellow, this wizard who can live backward in time…”
“Life is a gift and it offers us the privilege, opportunity, and responsibility to give something back by becoming more.”