In the fifth century BC professional educators, the sophists, travelled the Greek world claiming to teach success in public and private life. In this dialogue Plato shows the pretensions of the leading sophist, Protagoras, challenged by the critical arguments of Socrates. From criticism of the educational aims and methods of the sophists the dialogue broadens out to consider the nature of the good life, and the role of pleasure and intellect in the context of that life.About the Series: For over 100 years Oxford World's Classics has made available the broadest spectrum of literature from around the globe. Each affordable volume reflects Oxford's commitment to scholarship, providing the most accurate text plus a wealth of other valuable features, including expert introductions by leading authorities, voluminous notes to clarify the text, up-to-date bibliographies for further study, and much more.