"Hospitality is gold in this City; you have to be clever to figure out how to be welcoming and defensive at the same time. When to love something and when to quit. If you don't know how, you can end up out of control or controlled by some outside thing like that hard case last winter."

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Many are whispering that Voldemort must be behind it. However, that is the point: They whisper. They daren’t confide in each other, not knowing whom to trust; they are scared to speak out, in case their suspicions are true and their families are targeted. Yes, Voldemort is playing a very clever game. Declaring himself might have provoked open rebellion: Remaining masked has created confusion, uncertainty, and fear.

— J. K. Rowling