Two Centuries of Silence is an English translation of Do Qarn Sokout, Dr. Zarrinkub's celebrated work on the history of Iran in the lead-up to and after the Arab conquest in the mid 7th century. The author begins with a question that puzzles many: How was a world civilization with all of its achievements in art and architecture, religion and law, agriculture and engineering, and civil and military organization, overthrown by a nomadic people with limited literacy and few accomplishments? The title refers to the two-hundred-year period when Persian virtually went mute, when almost all traces of Iran's rich literary heritage were erased, and when Zoroastrianism gave way to Islam. Zarrinkub's history is not an unmitigated tale of draconian cultural change, however. He speaks of how Iranian identity went underground, occasionally surfacing in open rebellion against Arab and Muslim supremacy. Drawing on a variety of original sources, Zarrinkub looks into the "savage darkness" of nearly two hundred years and detects glimmers of Persian resurgence in various parts of Iran and Muslim Central Asia. In fits and starts forms of the indigenous language broke their long silence, and Iranians began to speak about and for themselves.