Abstract
In the final pages of the second chapter of Soziologie, Simmel introduces the Mediator as "third and impartial role". Around this social figure converge a large part of the central themes of his entire theoretical proposal: mutual action as a structuring factor of social reality; the formal approach to the study of society; the integrative function of conflict. The present essay aims to bridge Simmel reflections on present days. The objective is to show how in a historical moment, like the current one, in which the out-of-court resolution of the conflict becomes increasingly important, the analysis of the relational dynamics proposed by Simmel is still an instrument of fundamental importance, both for civil and criminal mediator and for social workers.