He had come to these foothills not merely to attempt to recall a time when he had been glad to be alive, but also to kill snakes if he saw any. Lately, alternately depressed and angered by the loneliness and sheer pointlessness of his life, he had been wound as tight as a crossbow spring. He needed to release that tension through violent action, and the killing of a few snakes—no loss to anyone—seemed the perfect prescription for his distress. However, as he stared at this rattler, he realized that its existence was less pointless than his own: it filled an ecological niche,
