In his last lectures, Foucault put his agenda the idea of “art of living” (tekhne peri ton bion) in the last lectures in College de France. Foucault, by bringing a hermeneutical approach to the figure of Socrates, shifted the discussion of subjectivity long before modernity. Foucault perceived a very different context of subjectivity in the antiquity, especially in the figure of Socrates, which is very different from the technologies of subjectivity of the modern age. The subjectivity realized in Socrates does not mean a discursive subjectivization constructed in accordance with an external truth. Socrates handles the truth as an immanent form of the self, but not on the outside of himself. The issue, according to Foucault, is not to live according to a transcendental truth outside of the self, but to discover the inner truth and establish the life according to this truth. In the example of Socrates, Foucault sees a form of an aesthetical-emancipative subjectivity which is far more different from modern forms of subjectivization. The main purpose of this article is to create a different panorama belonging to Foucault by revealing some specific contexts in ancient subjectivity technologies in the example of Socrates. Foucault discovered a theme of immanence in the forms of subjectivity in antiquity, which may be deemed necessary for modern life. The truth can only be discovered within the selfhood and, for this reason, it can gain its meaning only with the aesthetization of the life, rather from the context of prohibition-restriction. In Foucault, the idea of the art of the living corresponds to a form of existence where the subject can organize his life by discovering his immanent truth in himself without being represented in any transcendental signifier.