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Theodo'rus

31. Of CYRENE, a Pythagorean philosopher of the age of Pericles. According to Proclus (In Euclid. Element. Lib. I. Commentarius, lib. ii. p. 19, ed. Gryn. fol. Basil. 1533), he was a little younger than Anaxagoras [ANAXAGORAS], and was eminent as a mathematician. Apuleius (De Dogmate Platonis, lib. i. s. De Philos. Natural. haud longe ab init., and Diogenes Laertius (3.6, comp. 2.103) state that Plato went to Cyrene to study geometry under Theodore the mathematician, apparently the subject of this article. He is one of those enumerated by lamblichus (De Pythag. Vita, c. ult.) in his catalogue of the eminent Pythagoreans. (Fabric. Bibl. Graec. vol. i. p. 876, vol. x. p. 385.)

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