The soul of the world, a pure ethereal spirit that some ancient
philosophers said was diffused throughout all nature.
Plato is considered to be the originator of this idea, but it is of
more ancient origin and prevailed in the systems of certain
eastern philosophers. The Stoics believed it to be the only vital
force in the universe. Similar concepts have been held by hermetic
philosophers like Paracelsus and have been incorporated
in the philosophy of more modern philosophers like Friedrich