Percy smiled, small and humourless. "You're the one who's here. He wouldn't listen either way. It's the curse of good people that they never really think they've done anything truly wrong."
Percy lofted his eyebrows, for a moment as pursed and indignant as he might have been in school. "I would not have turned you in to Filch. Though I can't promise I wouldn't have taken points. Now and then." He shook his head, almost amused in some odd way. "No, I suppose I was best left in the dark about it all. But...don't you see, Fred? You would have given me a break the way you did Ron and Ginny, except you didn't think I'd approve. I tried to show my care for you in ways you didn't approve of. You...you don't get to use that as justification and then call me inhuman and unfeeling for the same bloody thing. Either they're both right or they're both wrong."