Paul Sagar is a lecturer in political theory at King's College London and the guy who played Thrasymachus in book 1.

He actually doesn't like reading Plato very much. I ask him why.

In this episode, Socrates goes up against his most formidable opponent yet: the sophist Thrasymachus.

Thrasymachus leaps at Socrates “like a wild beast” and yells at him for playing dirty. Then, he tells the boys that morality is a lie and that they should do as much injustice as they can get away with.

Socrates responds by winning the argument in the least persuasive way possible.