The questions that drive Priscilla Long's Fire and Stone are the questions asked by the painter Paul Gauguin in the title of his 1897 painting: Where Do We Come From? What Are We? Where Are We Going? These questions look beyond everyday trivialities to ponder the essence of our origins.

Using her own story as a touchstone, Long explores our human roots and how they shape who we are today. Her personal history encompasses childhood as an identical twin on a dairy farm on the Eastern Shore of Maryland; the turmoil, social change, and music of the 1960s; the suicide of a...