A study in the difference between Christianity and the paganism of Ancient Greece and Rome, evident as that paganism is in the writings of Homer, Aeschylus, Sophocles, Cicero and many other classical authors. A study which includes developing that paganism in a metaphysical way, beyond the deities of classical mythos, thus making such paganism relevant to the modern Western world. A modern development which involves an analysis of the texts of the Corpus Hermeticum.