Not mastery but service, will lead people in the right way.
servicequotes
Our laws, said Pericles, “afford equal justice to all alike in their private disputes, but we do not ignore the claims of excellence. When a citizen distinguishes himself, then he is preferred to the public service, not as a matter of privilege, but as a reward for merit; and poverty is not a bar.”
They were offered the choice between becoming kings or the couriers of kings. The way children would, they all wanted to be couriers. Therefore there are only couriers who hurry about the world, shouting to each other – since there are no kings – messages that have become meaningless. They would like to put an end to this miserable life of theirs but they dare not because of their oaths of service.