Found myself pulling down On Intelligence by Jeff Hawkins, and it leads me to the following conclusion. What and where is the Godhead? The neocortex. That is the source of everything, at least AS WE KNOW IT. It is the source of the only reality we will ever know, can know.
The neocortex, Hawkins posits, has the same basic mechanism, a predicting pattern matching mechanism, everywhere. So everything in our experience is unified by mediation by and sourcing via this one mechanism. Reason, art, religion, science, it all comes from this 2 mm thick dinner napkin sized folded sheet of neural tissue. The most sophisticated and magical tissue in the universe, as far as we know.