A samurai warrior once was charged with avenging a noble's death at the hands of a rival warlord. He trained for four years, studied the warlord's habits, and planned his attack. When the day came, he stealthily approached the warlord when he was alone, and cornered him. The samurai held his katana aloft, poised to strike the final blow, when the warlord, utterly defeated, spit in the face of the samurai. The samurai sheathed his sword and walked away, rather than kill the warlord out of anger.