"You could say that," Antonin chuckled, "at least not here. Then again, I did master Dark Arts at Durmstrang. Different schools, different outlooks. That, and one of my hobbies is tracking down the roots of spells in the old magic."
"The old magic is strong magic," he went on. "And if you look, you will find little bits of it in the oddest places, like the little household spells. The trick is to sort out the fact from the fancy; something I'm still learning after all these years."