This book considers the problems of death and the hereafter and how these ages-old problems ought to be addressed in light of our continuing progress. A materialistic viewpoint of reality is assumed, denying the likelihood of supernatural or other superhuman assistance. Death, however, is not seen as inevitable or even irreversible; it is maintained that the problem can and should be addressed scientifically in all of its aspects. The book thus follows recent, immortalist thinking that places hopes in future advances in our understanding and technology. A functionalist, reductionist argument is developed for the possibility of resurrecting the dead through the eventual creation of replicas and related constructs. Meanwhile, it is urged, medical advances leading to the conquest of biological death should be pursued, along with cryonics: freezing the newly deceased for possible, eventual reanimation. A common ground thus is sought between two hitherto largely independent strands of scientific immortalism, the one based on hopes in a remote but hyperadvanced future, the other on the nearer-term prospects of presently advancing technology. The resulting philosophy, encompassing both past and future, is directed toward the long-term interests of each sentient being, and it thereby acquires a moral dimension. The immortalization of humans and other life-forms is seen as a great moral project and labor of love that will unite us in a common cause and provide a meaningful destiny.