English summary: In November 1980, Michel Foucault gives in English, at Dartmouth College, two lectures entitled "Truth and Subjectivity" and "Christianity and Confession". In these lectures, through the study of the techniques of the self, including the examination of conscience and confession in Greco-Roman antiquity and early Christianity, Foucault traces the genealogy of the modern subject and the hermeneutics of the self that characterizes us today. This edition presents for the first time the French translation of conferences at Dartmouth College, with variants of the version given by Foucault the previous month at the University of California at Berkeley. It also presents two new unedited interventions, contemporary to these conferences: a public debate held at Berkeley and an interview where Foucault responds to questions about his research, where he is brought to discuss the values that guide his work. French description: En novembre 1980, Michel Foucault prononce en anglais, a Dartmouth College, deux conferences intitulees Truth and Subjectivity et Christianity and Confession. Dans ces conferences, a travers l'etude des techniques de soi, et notamment de l'examen de conscience et de l'aveu, dans l'Antiquite greco-romaine et le christianisme primitif, Foucault retrace la genealogie du sujet moderne et de l'hermeneutique de soi qui nous caracterise encore aujourd'hui. Cette edition presente pour la premiere fois la traduction française des conferences de Dartmouth College, avec les variantes de la version prononcee par Foucault le mois precedent a l'Universite de Californie a Berkeley. Elle presente egalement deux interventions inedites, contemporaines de ces conferences : un debat public qui s'est tenu a Berkeley et une interview, ou Foucault repond a des questions sur ses recherches et est amene a preciser quelles sont les valeurs qui guident son travail.