"They steal our abilities and offer to sell ourselves back to us." Explain to him how that is 'just' and 'right' and virtuous. "And the sorcery they sell us merely further corrupts our souls." Whoops no, don't get him talking about corruption. For your own sanity.

See, that's what he was talking about. "And what were those?" He was idly pacing along beside her, as she studied the ruins of what had once been somebody's home.