citizens have an inalienable right to enlightened leadership and that the duty of subjects is not simply to obey wise kings but also to rise up against those who are wicked. Leaders are seen as representatives of God on earth, but they deserve allegiance only as long as they have farr, a kind of divine blessing that they must earn by moral behavior. To pray for it, generations of Persian leaders visited Zoroastrian temples where holy flames burned perpetually, symbolizing the importance of constant vigilance against iniquity.
Cyrus and the other kings of his line bound their vast empire together with roads, bridges, uniform coinage, an efficient system of taxation, and the world’s first long-range postal service. But eventually and inevitably, the tide of history turned against them. Their empire began to shake after Darius, Persia’s last great leader, lost the decisive Battle of Marathon in 490 B.C. The death blow came from no less a conqueror than Alexander, who marched into Persia in 334 B.C. and, in a rampage of destruction, sacked and burned Persepolis.
For the next ten centuries, through periods of rule by three dynasties, Persians nurtured and deepened their strong feelings of pride and nobility. They flourished by assimilating influences from the lands around them, especially Greece, Egypt, and India, reshaping them to fit within the framework of their Zoroastrian faith. In the third century A.D. they began returning to the peak of world power on a scale that recalled the glory of the early emperors, capturing Antioch, Jerusalem, and Alexandria and pushing to the walls of Constantinople. Persian armies suffered a reverse at the hands of Byzantines in 626, but the great defeat was yet to come. A few years later, an army arose on the barren Arabian peninsula and turned toward Persia. These Arabs came armed not only with the traditional weapons of war, but with a new religion, Islam.
The invasion by the Arabs, who to the cultivated Persians seemed no more than barbarians, was a decisive turning point in the nation’s history. Persia’s fate paralleled that of many empires. Its army had been worn down by long campaigns, its leaders had slipped from what Zoroastrian priests would call the realm of light into that of darkness, and the priests themselves had become divorced from the masses. People fell into poverty as the greedy court imposed ever-increasing taxes. Tyranny tore apart the social contract between ruler and ruled that Zoroastrian doctrine holds to be the basis of organized life. By both political and religious standards, the last of the pre-Islamic dynasties in Persia, the Sassanians, lost the right to rule. The merciless logic of history dictated that it be overrun by an ascendant people fired by passionate belief in its leaders, its cause, and its faith.
Sassanian power was centered in Ctesiphon, the luxurious capital of Mesopotamia. This was not a city of stately columns like Persepolis but one bathed in excess. Its royal palace housed fabulous collections of jewels and was guarded by statuary of solid gold and silver. The centerpiece was the king’s cavernous audience hall, which featured a ninety-foot-square silk carpet depicting a flowering garden and, metaphorically, the empire’s wealth and power. Rubies, pearls, and diamonds were sewn into it with golden threads. When Arab conquerors reached Ctesiphon in 638, they looted the palace and sent the magnificent carpet to Mecca, where Muslim leaders ordered it cut to pieces to show their contempt for worldly wealth. They destroyed countless treasures, including the entire royal library. In an account of this conquest written by the tenth-century Persian poet Ferdowsi, a general laments: “Curse this world, curse this time, curse this fate / That uncivilized Arabs have come to force me to be Muslim.”
Later in the same epic, the Shahnameh, which is four times as long as the Iliad and took thirty-five years to compose, Ferdowsi portrays the