Book excerpt: The "Arab Spring" was heralded and publicly embraced by foreign leaders of many countries that define themselves by their own historic revolutions. The contributors to this volume examine the legitimacy of these comparisons by exploring whether or not all modern revolutions follow a pattern or script. Traditionally, historians have studied revolutions as distinct and separate events. Drawing on close familiarity with many different cultures, languages, and historical transitions, this anthology presents the first cohesive historical approach to the comparative study of revolutions. This volume argues that the American and French Revolutions provided the genesis of the revolutionary "script" that was rewritten by Marx, which was revised by Lenin and the Bolshevik Revolution, which was revised again by Mao and the Chinese Communist Revolution. Later revolutions in Cuba and Iran improvised further. This script is once again on display in the capitals of the Middle East and North Africa, and it will serve as the model for future revolutionary movements.