Albus had to chuckle as he imagined two Sirius Black's running about. The chaos that would cause - it would be a welcomed change to the every day doldrums. "Oh, there were many stories that were told to us during first year. Dragons in the dungeons, secret chambers, and the Founders themselves - all of it a fantastic mystery. I know some students did their best to go searching out the castle's secrets for themselves. But I discovered long ago that Hogwarts doesn't give up her secrets easily."
There was a twinkle to his eye as he remembered the castle. It was the one place he truly felt at home. When he was in the walls of Hogwarts he had the sense that no matter what, he was never truly alone. The castle was alive in it's own sense and Dumbledore felt he understood it, as much as one man could understand an entire castle.