“What do you see when you look in the mirror?”
“I? I see myself holding a pair of thick, woolen socks.”
Harry stared.
“One can never have enough socks,” said Dumbledore. “Another Christmas
has come and gone and I didn’t get a single pair. People will insist on
giving me books.”

It was only when he was back in bed that it struck Harry that Dumbledore
might not have been quite truthful. But then, he thought, as he shoved
Scabbers off his pillow, it had been quite a personal question.