[T]hose deities which are called ‘chthonic’ or earthly are, as a matter of fact, not in any sense deities of the earth. They are, in one of their aspects associated with the ‘underworld,’ but that underworld is but a segment of their cycle; they are deities of the underworld not because they appertain to the earth or are in any sense a personification of it, but because they are, on the contrary, heavenly bodies which, in the course of their cycle, pass under the eart. They are therefore just as much ‘uranian’ as are the Olympians.