Soul
People have long pondered the question of identity. Who am I? What makes me unique? What gives me my identity? Scientists have been puzzled by the question of life. While they can study the physical biology of human body, the question of what powers and animates the body? What is the difference between a live and dead corpse? It is not just that one is healthier than the other. Something major takes place at the time of death, and we know that to be the departure of the soul from the body.