Read this article. Rejaee presents a short review of political theorist Hannah Arendt's book On Revolution. In this book, Arendt argues that political revolutions are a necessary part of fostering liberty and a sense of freedom and equality in modern societies. Rajaee critiques Arendt's ideas and asserts that she fails to account for non-altruistic motivations in her arguments about the origins and causes of revolutions. What do you think are the most important factors that motivate individuals to participate in revolutionary events?