Abstract
After a review of the aporias of the social sciences in grasping the Arab Spring in its entirety and essence, and a summary of the debates raised by the exchanges to which the issues raised by the colloquium gave rise, Professor Henry Laurens returns to the concepts of revolution and democracy, as well as the weight of history and memory in the construction of democratic processes and belonging. He also analyzes the weight of the endogenous and the exogenous in the process of liberal and democratic transformation of Arab-Muslim societies.