Harry Potter and the Brotherhood

When others blindly pursue truth, remember, nothingness. When others' minds are bound by law and morality, remember, all is permitted. We toil in darkness yet serve the light. Assassin A: "Mentor! I understand, nothing is needed, do whatever you want!" Yano: "Please, be a human being!" Assassin A: "Nothingness, all is permitted, I am an assassin!" (The historical events in the book have no connection to reality; consider them parallel worlds.)