Prytanis

A chief official or magistrate. A member of one of the ten sections into which the Athenian senate of five hundred was divided. Each section held the presidency of the senate for about one tenth of the year (Webster's).

"Now I observe that when we are met together in the assembly, and the matter in hand relates to building, the builders are summoned as advisers; when the question is one of ship-building, then the ship-wrights; and the like of other arts which they think capable of being taught and learned. And if some person offers to give them advice who is not supposed by them to have any skill in the art, even though he be good-looking, and rich, and noble, they will not listen to him, but laugh and hoot at him, until either he is clamoured down and retires of himself; or if he persist, he is dragged away or put out by the constables at the command of the prytanes. This is their way of behaving about professors of the arts.

But when the question is an affair of state, then everybody is free to have a say--carpenter, tinker, cobbler, sailor, passenger; rich and poor, high and low--any one who likes gets up, and no one reproaches him, as in the former case, with not having learned, and having no teacher, and yet giving advice; evidently because they are under the impression that this sort of knowledge cannot be taught. And not only is this true of the state, but of individuals; the best and wisest of our citizens are unable to impart their political wisdom to others: as for example, Pericles, the father of these young men, who gave them excellent instruction in all that could be learned from masters, in his own department of politics neither taught them, nor gave them teachers; but they were allowed to wander at their own free will in a sort of hope that they would light upon virtue of their own accord."

Plato, Protagoras (4th century B.C.)

[translated by Benjamin Jowett].