The analysis of the confession in Foucault's work based on the comparison between Les anormaux, Mal faire, dire vrai and Les aveux de la chair shows one of the most relevant displacements in Foucault's work, which constitutes a good part of the essence of what has been called the last Foucault: the relation of the subject and the truth. An attempt will be made to account for this turn, analyzing the look at primitive Christianity of the last Foucault and the (...) relationship of such reflection in the analysis of the hermeneutics of the self. The last reflections on the confession in Les aveux de la chair will show the meaning of the ethical inquiry of the last Foucault that reproduces the double critical and ontological character of anarcheology. (shrink)