This chapter focuses on Aron’s interpretation of Montesquieu and Tocqueville and his influential self-description as their ‘belated descendant’ in his book Main Currents of Sociological Thought. It argues, firstly, that in this book Aron’s invention of a ‘French school of political sociology’ represented by these liberal forbears was part of wider efforts among sociologists to rewrite their discipline’s history at a time when it was becoming unprecedentedly popularised and institutionalised. It shows that the decline of Durkheimian hegemony at this juncture had opened up a consensus gap between French sociologists, some of whom - including Aron - responded by rewriting the discipline’s past to legitimate their competing visions of its future. The chapter also shows how Aron read Montesquieu and Tocqueville through the lens of his earlier philosophical writings in an attempt to revise the epistemological basis of his political thought. Ironically, this project was substantially indebted to previous readings of Montesquieu and Tocqueville by some of the same Durkheimian colleagues against whom Aron defined himself and the ‘French school of political sociology’ in Main Currents.