5.5
But Hermippus says that he once came upon some anonymous memoirs in which it was recorded that Demosthenes was a pupil of Plato and got most help from him in his rhetorical studies. He also quotes Ctesibius as saying that from Callias the Syracusan and certain others Demosthenes secretly obtained the rhetorical systems of Isocrates and Alcidamas and mastered them.
6.1
However this may be, when Demosthenes came of age he began to bring suits against his guardians and to write speeches attacking them. They devised many evasions and new trials, but Demosthenes, after practising himself in these exercises, as Thucydides says, Καὶ ἐμπειρότεροι ἐγένοντο μετὰ κινδύνων τὰς μελέτας ποιούμενοι (i.18, 3 of the Athenians and Lacedaemonians). not without toil and danger, won his cause, although he was able to recover not even a small fraction of his patrimony. However, he acquired sufficient practice and confidence in speaking, and got a taste of the distinction and power that go with forensic contests, and therefore essayed to come forward and engage in public matters.
