 In a substantial comment (319a–320c), Socrates understands this to mean that Protagoras teaches the techne of good citizenship, which he takes to be the virtue of citizens, and to include political wisdom. Socrates argues that such virtue cannot be taught; if it could, Pericles would have imparted it to his sons, but he failed to do so. This argument might convince Socrates’ audience, but it cannot have convinced Socrates, who was no great admirer of Pericles.