It is not your fault. You know how little sense that logic makes?
[Waves his hand, absently, frustrated] If Athos had never been a musketeer, d'Artagnan's father would still be alive. Obviously that's Athos' fault. If Constance had never fallen for d'Artagnan, her husband would still be alive. Obviously that's her fault. If- -- If my mother had never had me, she'd still be alive. So it's my fault.