This book explores the teachings of the ancient Greek philosopher Protagoras and his contributions to the art of argument. It examines the various techniques and strategies he developed for constructing persuasive arguments and the philosophical implications of his work. It also looks at how his ideas have been
From Wikipedia
Protagoras 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.