Abstract: The subject of this research  is the philosophy of history of  Pyotr Yakovlevich Chaadaev as the founder of “Russian idea”, the problematic of which was principal in reasoning of the representatives of the Russian sociopolitical thought regarding the place of Russia in world civilization, its sociocultural and national identity. Alongside the assessments of the vector of Russian history as a whole and its separate stages, the subject of the analysis is also the character of author’s discourse, which united the perception of history as the synthesis of historical narrative and philosophy of history, fine intuition, and rational analysis. Methodology of research of Chaadayev’s works as the most remarkable representative of Christian historicism suggest the application of interdisciplinary approach, principles of intellectual history, comparative culturology, and retrospective political science. The scientific novelty is defined by specification of the stages of creative evolution of P. Y. Chaadayev, conclusion on similarity of the worldview and theoretical-methodological basis of the delegates of two movements of the “Russian Europeanism” represented by the Westernizers and Slavophiles. Accent is made on the difference of the heuristic value of methodology of P. Y. Chaadayev’s history for the assessment of historical fates of the European and Russian people.