Albus leaned forward, elbows on the table, as the other wizard sat down. It was an interesting idea. There was no denying that Hogwarts Castle had a power, a magic all of it's own. He had known that since he was eleven years old, had been delighted to find somewhere where his own talents had been so complemented.
"Oh, don't we all," he commented offhandedly. The redhead fixed Snape with a bright stare. "How can we be sure the castles intentions are innocuous?" He tapped his fingertips against the wood thoughtfully.
"It needs magic to survive, after all. I'm sure it would take many years to reach that point, but the fact exists nonetheless."