The question of human existence after death has been the subject of many philosophers in past centuries and will provide a point of discussion in the future. It is hoped that this book will not only give a historical account of philosophies on immortality but will also show that it is a belief that (a) affects our present life, (b) is reasonable to the human intellect, and (c) is inseparably rooted in Christian hope. In presenting some arguments, we may seem to be moving towards an argument for theism, but this is not the point of this book, although in presenting some aspects (i.e. the connection between morality and immortality), this work seems to be moving towards that end. All the historical arguments for life after death cannot be presented in this small work, only some of them. No distinction will be made between the terms 'life after death,' 'immortality,' and 'eternal life'; these expressions will simply be used synonymously.