Julian's Salutation to Helios

[Euklid]

This god {Helios} has civilized, by the agency of the Hellenic colonies, the greatest part of the habitable globe; he has prepared it the more readily to submit to the Romans----a race possessing not merely a Hellenic origin, but also being Hellenic, and who have established and maintained a creed as regards the gods that is thoroughly Hellenic from, beginning to end; and who, besides all this, have founded a form of government in no way inferior to that of the best regulated states----even if of all the governments that have ever been tried, it be not the very best; from all which circumstances, I think I have myself recognized the Roman state as being Hellenic both in its origin and in its government.

-Julian's Salutation to the Sun, Roman Emperor (331–June 26, 363 ACE)

http://www.tertullian.org/fathers/julian_apostate_1_sun.htm

[Spartan]

Very interesting find! Is there an academic source for that?