Abstract
Good judgment (euboulia) was the principal reward Protagoras promised from his teaching, and he was the foremost teacher to whom students went for paideia in fifth-century Greece. I begin with a theoretical exposition of the nature of good judgment in the contexts relevant to fifth-century paideia—in deliberative bodies, in the law courts, among generals discussing tactics, and among private citizens managing their households. I then turn to review what teachers like Protagoras taught, and ask whether it is reasonable to expect such teaching to foster good judgment. I will show that it meets the problem of relevance by attempting to bring every possible factor into an adversarial discussion before a matter is put to judgment.