If life is a reality, the death is an eternal truth. Does immortality mean clinging to body? If so, it cannot be the life artificially alive as in modern hospitals. Is extinction of species important? The recent developments in the field of molecular biology to clone the extinct animals may raise another dimension: do the species ever die? Death is not the extinction of life, it rather opens a horizon for new journey on this planet or the other. If a person elevates himself and immensely contributes to the society, he gets perpetuated and becomes immortal. Every culture has its own eschatology bearing with death, rituals, customs, beliefs and values. While the Hindus and the Buddhists adhere to the theory of reincarnation, the Muslims and the Christians hold the concept of eternal after life. In the present book, originally the proceedings of the seminar organized by the N.K. Bose Memorial Foundation, Varanasi, various distinguished scholars have richly contributed in presenting an in-depth study of the concept of death from the distinct viewpoint of all religions and cultures and at the same time taking into account their common concept of continuity of life after death in contrary to the biological science that adheres to the mechanism of “cell-death.” Through the social, philosophical, medical, and ayurvedic approaches to death, the existence of soul based on the ideas of immortality and ancestor-worship has been further validated. The book has demonstrated as to how this hard-headed research can illuminate a certain theory that would serve as a bridge between the physical science and social science, the purpose being to reveal the most overall general character of Nature and the nature of Man. This book would definitely appeal to all general readers and more particularly to those of philosophical temperament keen to know more about Death and also the world beyond it.