I have been speculating that the ancients believed in eternal life or re-incarnation because when you fall asleep you never actually remember the point at which you actually pass out.......you just remember waking up. The ancients commonly believed certain gods had domain over natural elements such as a god of fire or water. The egyptian god amen is known as the hidden or divine principle, a somewhat intangiable omni-present relationship between all things, sort of holding them together. Are phycists who are searching for a unifying theory of space-time, looking for god? By the way, the great pyramid was built by floating the building blocks into place.....using the natural properties of water, barges and locks, I think they where in tune with nature.