This article sets out to reconstruct the network concept as it appears in the different stages of Edgar Morin’s multidisciplinary thinking. The project he builds up in La Méthode around the idea of complexity requires, at the outset, the abandon, in epistemological terms, of the dominant disjunctive conception of scientific knowledge in favor of a more reticulated pattern. A network is then understood as a particular pattern of organization that applies to the physical world but also, in the same terms, to life and society. Hinging on concepts such as “society as a super-brain” where the individual functions as a “flashing light,” the sociology of networks that Morin developed to track the evolution of society towards complexity brings him to an analysis of globalization that concludes with the worrying paradox of its incompleteness.