Patricia Crone's latest book is about the Iranian response to the Muslim penetration of the Iranian countryside, the revolts subsequently triggered there, and the religious communities that these revolts revealed. The book also describes a complex of religious ideas that, however varied in space and unstable over time, has demonstrated a remarkable persistence in Iran across a period of two millennia. The central thesis is that this complex of ideas has been endemic to the mountain population of Iran and occasionally become epidemic with major consequences for the country, most strikingly in...

This book aims to present general readers and specialists alike with a broad survey of Islamic political thought in the six centuries from the rise of Islam to the Mongol invasions.