Whereas my grandfather was getting used to a much more terrifying reality. Holding my hand to keep his balance, as trees and bushes made strange, sliding movements in his peripheral vision, Lefty was confronting the possibility that consciousness was a biological accident. Though he'd never been religious, he realized now that he'd always believed in the soul, in a force of personality that survived death. But as his mind continued to waver, to short-circuit, he finally arrived at the cold-eyed conclusion, so at odds with his youthful cheerfulness, that the brain was just an organ like any other and that when it failed he would be no more.