Our lives are full of dichotomies: dark versus light, sin versus virtue, right versus wrong, experience versus innocence, young versus old, childhood versus adulthood, pride versus shame, angels versus demons. Many of us grow up to believe that we are either one version of ourselves or another--black or white--and that there is no in-between. The reality is that we all live in shades of gray. There is darkness and light in all of us. The only way...