It was probably between 378 and 376 B.C. that Isocrates went on several voyages with Conon’s son, Timotheus, who was engaged in organizing the new maritime league. From this time down to 351 B.C. he had many distinguished pupils from far countries—Sicily and Pontus as well as all parts of Greece—and amassed, as he tells us, a reasonable competence, though not a large fortune.

In the year 351 B.C., when a great contest of eloquence was held by Artemisia, widow of Mausolus of Caria, in honour of her husband, it is reported that all the competitors were pupils of Isocrates.

In the last period of his life, 351-338 B.C., Isocrates still continued to teach, and was also busily occupied in writing. He published the Philippus, which is one of his most important works, and one of the greatest in historical interest, in 346 B.C.; in 342 B.C. he began the lengthy Panathenaicus, which he had half finished when he was attacked by an illness, which made the work drag on for three years. It was finished in 339 B.C. In the following year, a few days after the battle of Chaeronea, he died. A report was current in antiquity that he committed suicide, by starving himself, in consequence of the news of this downfall of Greek liberty; the story is quite incredible when we consider that the result of the battle gave a possibility of the fulfilment of the hopes which Isocrates had been cherishing for half his life, the end to which he had been labouring for over forty years—the concentration of all power into the hands of one man, who might redeem Greece by giving her union and leading her to conquest in the East.

His last letter, in fact, written after the battle of Chaeronea, congratulates Philip on his victory; and even if this letter is spurious, the probability, to judge from the tone of his earlier works, is that he would have hailed the Macedonian success as a victory for his imperial ideas.

§ 2. Style

Though Isocrates composed, in his youth, a few forensic speeches, it is not by such compositions that he must be judged; indeed he himself, far from claiming credit for his activity in that direction, in later life adopted an apologetic tone when speaking of his earlier work. As a teacher of rhetoric he won great renown, numbering, as he boasts, even kings among his pupils; and he had a complete mastery of all the technique of the rhetorical art.

He was also a master of style, having theories of composition which he exemplified in practice with such skill that he must occupy a prominent place in any treatise on the development of Greek prose.

But his highest claim to consideration is as a political thinker. His bold and startling theories of Greek politics were expressed indeed in finished prose, and in rhetorical shape; but the artistic form is only an added ornament; if Isocrates had written in the baldest style he must have made a name by his treatises on political science, and by the fact that he took a broader and more liberal view of Hellenism than any Athenian before or after. Thus he, who perhaps never delivered a public speech, is of more importance than any of the other orators; and though no politician in the narrow sense, he exerted a wider influence than any, not excepting Demosthenes, who devoted their lives to political activity, for he originated and promulgated ideas which completely changed the course of Greek civilization. It was probably he who was the first to instigate Philip to attempt the conquest of Asia, as he had before urged Dionysius and others to make the attempt—all for the sake of the union of Greek States and the spread of Hellenism; certainly he encouraged the Macedonian in his project, and perhaps it may be said to be due to him that on Philip’s death Alexander found the way prepared.

Isocrates could not fully foresee the results of Alexander’s conquests; Alexander himself modified and expanded his ambitions as he advanced; but undoubtedly Isocrates urged the general desirability of the undertaking and saw clearly, up to a certain point, the lines on which it ought to be carried out. The petty law-suits which occupied Lysias and Andocides seem trivial and unimportant, even the patriotic utterances of Demosthenes seem of secondary weight, compared with these literary harangues of Isocrates, in cases where civilization and barbarism, unity and discord, are the litigants, and the court is the world.

Isocrates is named by Dionysius as an example of the smooth (or florid) style of composition, which resembles closely woven stuffs, or pictures in which the lights melt insensibly into the shadows.[186]