This isn't a religion where you die and you go to heaven. You die and you go to like the underworld beneath the earth where it's all dark and nasty. And in fact, they used cuneiform to write their ideas down. That's how we know this. And one of the first pieces of literature in human history was the Epic of Gilgamesh, who was one of the early kings of a city-state in Sumer where the Sumerians lived. And you can hear from this passage how they viewed life itself. Gilgamesh, whither are you wandering?