This paper wants to show, through the interpretation of Jean-Luc Nancy, how the interaction between the Kantian ethics and some aspects of the Heideggerian philosophy can lead to a model of a subject who is in immediate relationship with others and with their community. Nancy’s position will be presented in opposition to that of Alain Renaut, to show the different ways of considering the relationship between Kant and Heidegger about ethics, apriorism and subjectivity.