6 lectures given by Michel Foucault at the University of California at Berkeley, Oct-Nov. 1983

My intention was not to deal with the problem of truth, but with the problem of truth-teller or truth-telling as an activity. By this I mean that, for me, it was not a question of analyzing the internal or external criteria that would enable the Greeks and Romans, or anyone else, to recognize whether a statement or proposition is true or not. At issue for me was rather the attempt to consider truth-telling as a specific activity, or as a role.
Discourse & Truth, Concluding remarks.

Alexandra Meets Diogenes