ISAEUS, was born in Chalcis. When he came to Athens, he read Lysias's works, whom he imitated so well, both in his style and in his skill in managing causes, that he who was not very well acquainted with their manner of writing could not tell which of the two was author of many of their orations. He flourished after the Peloponnesian war, as we may conjecture from his orations, and was in repute till the reign of Philip. He taught Demosthenes--not at his school, but privately--who gave him ten thousand drachms, by which business he became very famous. Some say that he composed orations for Demosthenes, which he pronounced in opposition to his guardians. He left behind him sixty-four orations, of which fifty are his own; as likewise some peculiar institutions of rhetoric. He was the first that used to speak or write figuratively, and that addicted himself to civil matters; which Demosthenes chiefly followed. Theopompus the comedian makes mention of him in his Theseus.
Scanned by Agathon (RSB) from the University of Washington's copy of Plutarch's Lives and Writings, ed. by A.H. Clough and William W. Goodwin, with an introd. by Ralph Waldo Emerson. London, Simpkin, Hamilton, Kent & Co., Ltd. [1914?], vol. 5.