No matter how good the teacher is, there are students he cannot teach; no matter how good the policeman is, there are thieves he cannot catch; no matter how good the hunter is, there are foxes he cannot catch; no matter how good the killer is, there are targets he cannot kill. I am a killer, a good killer, and have never missed a target, but I don't know if I will always be. I am still alive, living to find the answer to this question, and maybe on that day, I will die.