I feel sick with guilt for not having prevented it. And…” Valcotta hesitated, then blurted out, “Have you ever had an idea lodge in your thoughts like a spark, and rather than your efforts extinguishing it, they only cause it to burst into flame? And for those flames to illuminate the world in such a way that you half wondered if you’d been blind before?” “Yes.” Because her words had lit a spark in his own mind,
