The fact only confirms his own beliefs. No one is invincible. No one is 
forever so cautious or clever or quick as to be immune to death. For every being 
that kills there is another capable of killing it. Somewhere in the world there 
is one who is fully capable of killing even him. Perhaps Striper herself might 
have killed him, had she known the way, had she been sent to kill him before he 
had been sent to do her.