The difference between the christian view should not be overstated in terms of what parrhesias is. Christianity is in part an extension of later greek philosophy. Nietzches claims between philosophical truthfulness and christian truthfulness; this was basically one and the same thing. Cynicism is one of the greek philosophical schools in which parrhesia became a dominant form. Each particular school developed a type of parrhesia. Foucault by public life, what you get in communal life is life in the school itself. In two distinct pedagogical relationships, one in the classroom, where the teacher teaches to students, foucault suggests that it takes on a very different form, or that it has become formalized for the first time. It"s the master to individual disciple, truth is conveyed through this. It"s much more difficult to learn truth within a collective than truth through the teachings of a master.