The Illusion-Motivation Model of Revolution is presented in this chapter. The term “illusion” is not used here to suggest anything negative; it is simply referencing the normal human tendency to be influenced by illusions in everyday life. Five major illusions characterize the behavior of people engaged in a revolutionary movement. The supreme revolutionary illusion is the shared belief among those in a revolutionary movement that all of them will benefit in equal ways from the coming to power of the new revolutionary government. The illusion of unity results in differences within the revolutionary movement being overlooked. The illusion of rationality is in effect after regime change, and it is based on the assumption that a rational approach will yield the necessary positive results. The illusion of control characterizes the extremists who in the post-revolution period topple the moderates and come to power, believing that they can control and change mass behavior in line with their goals. Finally, the illusion of permanence is shared by extremist leaders and their regimes, in the belief that their revolutionary society will last forever.