This book examines the nature of our commitment to the long-term survival of humanity. It addresses the lack of a sustainable and ethical commitment to a shared and binding future for the well-being of those who will come after us. While other texts focus on the threats to our survival, such as climate catastrophe or nuclear annihilation, this study argues that a greater threat to our survival is our disposition of ambivalence about the value of future lives. The other claim of the book is that, to avoid our extinction, we have to recover a sense of ourselves as beings worthy of salvation. Clearly argued and jargon free, the book will be useful for scholars with an academic interest in philosophy, psychology, sociology, history, culture studies, and population ethics.