"Half our family does seem to owe you their lives, now that I stop and think about it. Well, all I can say is that it was a lucky day for the Weasleys when Ron decided to sit in your compartment on the Hogwarts Express, Harry."
"It’s ideal for Headquarters, of course. My father put every security measure known to wizardkind on it when he lived here. It’s unplottable, so Muggles could never come and call - as if they’d ever have wanted to - and now Dumbledore’s added his protection, you’d be hard put to find a safer house anywhere."