A work of modern apologetics aimed at intelligent young people searching for answers to the meaning of life. As the title indicates, the author addresses his nineteen nieces and nephews, who range in age from 17 to 40. However, these young people are taken as representatives of a wide and varied audience. The questions posed by the author lead to an examination of whether human beings are immortal, what life after death may be like and how the choices made in this life relate to it. This requires a concise but thorough tour of key arguments in philosophy and theology, drawing especially on the Catholic tradition.