Let me "zing in" a bit of outrage that no discussion of
"parrhesia" was given. The dictionary definitions I have
found so far seem quite inadequate. The mention "freedom" and "boldness" but do not say a mumbling word about TRUTH.
The worst liars can speak boldly and freely.
Here is rather long site about Socrates:
http://foucault.info/documents/parrhesia/Lecture-05/01.socratic.html

Please, can someone show me an adequate definition of "parrhesia"?