"Not long ago, I read an interview with the war correspondent Chris Hedges in which he used a phrase that seemed like a perfect description of our situation: "the moral ambiguity of human existence." This refers, I think, to an essential choice that confronts us all: whether to cling to the false security of our fixed ideas and tribal views, even though they bring us only momentary satisfaction, or to overcome our fear and make the leap to living an authentic life. That phrase, "the moral ambiguity of human existence," resonated strongly with me because it's what I've been exploring for years: How can we relax and have a genuine, passionate relationship with the fundamental uncertainty, the groundlessness of being human?"