In this lively and accessible debate, the authors introduce the main arguments for and against living forever, along with some new ones. They draw on examples from myth and literature as well as new thought experiments in order to bring the arguments to life. Cave contends that the aspiring immortalist is stuck on the horns of a series of dilemmas, such as boredom and meaninglessness, or overpopulation and social injustice. Fischer argues that there is a vision of radically longer lives that is both recognizably human and desirable. This book offers both students and experienced philosophers a provocative new guide to a topic of perennial importance.