Jason of Pherae was master of Thessaly from
4
374 to 370,—a man of great ability and great ambition
5
; he had talked of a war with Persia, and
had gained popularity thereby. He was the pupil of Gorgias and the friend of Isokrates. If the latter did not directly appeal to him he must certainly for a time have hoped in him. Jason was assassinated in 370. It was then, probably, that Isokrates turned his eyes on Dionysios I., tyrant of Syracuse. The
6
fragment of the extant letter to Dionysios is only prefatory; it appears to have been written in 368 B.C. and encourages Dionysios with the prospect of Athenian support; elsewhere he takes credit for having spoken boldly
7
. Dionysios died in 367. Archidamos
8
III., who succeeded his father Agesilaos as a king of Sparta in 361, next attracted the hopes of Isokrates. The letter to Archidamos belongs probably to 356 B.C. It urges him to undertake a task to which his father Agesilaos was devoted, and in which he failed only because he tried to do two things at once—to make war on the Great King and to restore his political friends to their cities
9
. But meanwhile Philip of Macedon had become strong. After a fitful
10
war of ten years, peace was made between Philip and Athens in March, 346. The letter or pamphlet which bears his name was addressed to him by Isokrates about April in 346. Philip is summoned as a Greek and a descendant of Herakles to levy war against Asia. Either he will conquer Persia, or at least he will detach from it all that lies
westward of a line drawn from Cilicia to Sinôpê. In either case he will free the Asiatic Greeks and make new settlements for the Greeks who are now homeless. Seven years later—in 339—Isokrates remonstrates with Philip for recklessly exposing his life in frays with barbarians which only delay his real task
11
. In the Third Letter—of which the genuineness, though not unquestioned, is hardly questionable —he rejoices, a few days before his death, that he has lived to see part of his hopes fulfilled by the battle of Chaeroneia.