This chapter examines the psychological factors that underlie behavioral continuity after revolution leads to regime change. Revolutions change the people in power, but they do not necessarily change the behavior of those who come to power after the revolution. All revolutionaries, irrespective of their particular ideologies, face the challenge of changing the behavior of people in their society – behavior that took shape over many years in the pre-revolution society. All revolutionaries are confronted with the stubborn resilience of how people think and act as it was shaped before the revolution – but how are behavioral changes to be achieved toward the ideal society that revolutionaries envisaged? Mao and some other revolutionaries proposed there should be “perpetual revolution,” because the possibility of backsliding to pre-revolution behaviors is too great. But perpetual revolution also means perpetual uncertainty and instability – and even chaos. Other extremist programs attempted by revolutionaries (to prevent continuity in behavior) are emptying cities (as practiced by the Khmer Rouge in Cambodia) and emptying universities (as practiced by Mao in China and Khomeini in Iran).