Deinon, in his History of Persia), of Mæander. He was a native of Abdera, as Heraclides Ponticus tell us, in his treatise on Laws; and the same authority informs us that he made laws for the Thurians. But, according to the statement of Eupolis, in his Flatterers, he was a native of Teos; for he says:—
He, and Prodicus of Ceos, used to levy contributions for giving their lectures; and Plato, in his Protagoras, says that Prodicus had a very powerful voice.
II. Protagoras was a pupil of Democritus. And he was surnamed Wisdom, as Phavorinus informs us in his Universal History.
III. He was the first person who asserted that in every question there were two sides to the argument exactly opposite to one another. And he used to employ them in his arguments, being the first person who did so. But he began something in this manner: > “Man is the measure of all things: of those things which exist as