https://web.archive.org/web/20051118202303/http://www.galilean-library.org/int21.html
https://en.m.wikipedia.org/wiki/Asiatic_style
https://en.m.wikipedia.org/wiki/Atticism
https://en.m.wikipedia.org/wiki/Gorgias
https://en.m.wikipedia.org/wiki/Socratic_method
https://en.m.wikipedia.org/wiki/Rogerian_argument
https://en.m.wikipedia.org/wiki/Protagoras