Continuing his Persian obsession, Gobineau published Histoire des Perses ("History of the Persians") in 1869.[108] In it he did not attempt to distinguish between Persian history and legends treating the Shahnameh and the Kush Nama (a 12th-century poem presenting a legendary story of two Chinese emperors) as factual, reliable accounts of Persia's ancient history.[108] As such, Gobineau began his history by presenting the Persians as Aryans who arrived in Persia from Central Asia and conquered the race of giants known to them as the Diws.[108] Gobineau also added his own racial theories to the Histoire des Perses, explaining how Cyrus the Great had planned the migration of the Aryans into Europe making him responsible for the "grandeur" of medieval Europe.[109] For Gobineau, Cyrus the Great was the greatest leader in history, writing: "Whatever we ourselves are, as Frenchmen, Englishmen, Germans, Europeans of the nineteenth century, it is to Cyrus that we owe it", going on to call Cyrus as "the greatest of the great men in all human history".[110]