L’«étrange monadologie» du plérôme. Remarques sur L’instauration philosophique d’Étienne Souriau

L’Instauration philosophique (1939) is one of the most relevant philosophical works by Étienne Souriau. In this book, the French philosopher tries to outline the main laws which define the instauration of a philosophical theory, in order to construct a philosophy of philosophies. Pleroma is one of the key-concepts of this work, and it refers to the dimension that includes all the well-established philosophical perspectives. The aim of this paper is to reconstruct some issues connected to this work, regarding specifically the notion of pleroma. The paper underlines the connection between L’instauration philosophique and the philosophical milieu in which it was written, and then stresses the relevance of artworks and aesthetics for Souriau’s idea of instauration. The paper deals with the architecture of pleroma, and finally examines some similarities and some differences between the pleroma and Leibniz’s Monadology.