For most of us, the questions of life continue to perplex : Who am I? Why am I here? How shall I live? In the late nineteenth century, a class of thinkers emerged who made solving these problems central to their work: psychotherapists. They examined unhappiness up close and sought to unroot its causes. They rejected religous dogma and philosophical abstraction and instead developed theories from frequent and systematic observation. They understood that human questions demand human answers - and that without understanding what it means to be human, there are no answers.