This work studies a series of exemplary texts of French theory in which the merging of theatre and theory has occurred and in which an exploration through the aesthetic figure of theatrical act and its ethical considerations has been developed on relation to the limits of philosophy and philosophical thinking. The term of the "aisthethicon" is an agglutination of languages; it is an emergence of a multiplicity. It is formed by different components that define it: (1) The concept of aisthesis in Jean‐Luc Nancy's sense; (2) the Lacanian ethics and (3) the aesthetics of Nietzsche's (un)death. These are the concepts, in the most evident approach of the word itself, that have been agglutinated in the aisth-ethi-con as it used in this text.