From Robert Frost to Sharon Olds, Virginia Woolf to Ian McEwan, Jane Hirshfield to Carl Dennis, storytellers of every stripe consider the roads not taken, the lives we haven't led. What is it that compels us to identify with fictional and poetic voices tantalizing us with the shadows of what might have been? Not only poets and novelists, but psychologists and philosophers have much to say on this question. Miller finds wisdom in all of these, revealing the beauty, the allure, and the danger of sustaining or confronting our unled lives.