Σαλούστιος, Salustus the Philosopher

"The world, one may say, is a Myth in which bodies and things are visible; but souls and minds, hidden." Σαλούστιος, 'Sallustius the philosopher", or Sallust, a Fourth Century A.D. philosopher and a friend of the Roman (and Byzantine) Emperor Julian, wrote the treatise 'On the Gods and the Cosmos', which has been called a catechism of Fourth Century GrecoRoman Pagans. Sallustius' work owes much to Iamblichus of Chalcis, who synthesized Platonism with Pythagoreanism and theurgy, and also to the Emperor Julian's philosophical writings.

http://www.hermetic.com/texts/on_the_gods-1.html

http://nekkidass.blogspot.com/2008/07/emperor-julian-attempting-to-make-peace.html

http://en.wikipedia.org/wiki/Julian_the_Apostate