1. The date of I.'s sojourn at Chios is a vexed question.(1) Sauppe, followed by Rauchenstein (Introd. to Select Speeches, p. 4), thinks that Isokr. was at Chios from about 393 to 388 B.C. His argument is this. Cicero ( Brut. § 48 ) quotes Aristotle as saying that Isokrates first wrote forensic speeches, and afterwards taught rhetoric. But his earliest known forensic speech, Or. XXI, refers to 403 B.C.; the latest (Or. XVII, XIX) belong to 394 or 393. If, then, Aristotle is right, his teaching at Chios cannot have begun before 393.(2) Sanneg ( De Schola Isocratea, Halle, 1867) puts the stay at Chios in 398—395 B.C.; arguing that the years 395—388 are claimed for Athens as against Chios by the life-chronology of certain of I.'s pupils (esp. Eunomos—Philomêlos—Androtion: Antid. § 93).The important point, in my view, is this:—Isokrates wrote forensic speeches for about ten years from 403: he began to teach regularly at Athens about 392. He may have taught for a livelihood at Chios in 404—3, but this was an accident. It does not represent a period of his life-work. Cic. Brut. § 48 does not apply to it. Surely some such strong outward pressure as the Tyranny makes I.'s migration more intelligible. I find that A. Kyprianos, τὰ ἀπόρρητα τοῦ Ἰσοκράτους, Athens, 1871 (pp. 22—3) agrees with me.