"Not all wolves want the potion," Tris said. "I'm sure you've heard the ..."
He trailed off and frowned. "Well, maybe not, if you're Muggleborn. Fenrir Greyback ring any bells for you? He's ... parents tell stories about him to get their kids to behave. Like Muggles have a boogeyman? We have him. Or had. He might be dead now. But there are others, like this Drakkor bloke."
He grinned. "If I ever get rich enough to afford it, I'll hand out Wolfsbane on street corners."
Shaking his head, he thought for a moment. "Not since infancy, no. My first shift ... I was eight. So we started it then. And yes, my mum was turned, but fortunately my baby brother turned out clean. No fur for him."