Protagoras ( ; ; )Guthrie, p. 262–263. was a pre-Socratic Greek philosopher and rhetorical theorist. He is numbered as one of the sophists by Plato. In his dialogue Protagoras, Plato credits him with inventing the role of the professional sophist.
Protagoras ( ; ; )Guthrie p 262–263 was a pre-Socratic Greek philosopher and rhetorical theorist He is numbered as one of the sophists by Plato In his dialogue Protagoras Plato credits him with inventing the role of the professional sophist