V. We are told that he was first led to turn his attention, to oratory by the following incident. When Kallistratus was going to make a speech in court about the affair of Oropus[125] great interest was taken in the trial because of the ability of the orator, who at that time was at the height of his reputation, and also because of the important character of the law suit. Demosthenes, hearing his teachers and attendants making arrangement to be present at the trial, persuaded his own servant by great entreaties to take him to hear the speeches. The man, who was intimate with the doorkeepers of the court, managed to obtain a place for Demosthenes, in which the boy could sit unseen by the public and hear all that was said. Kallisthenes spoke very brilliantly and was much admired. He excited the envy of Demosthenes by the honours which he received, as he was escorted home by a long train of friends who congratulated him upon his success; but the boy was even more impressed by the power of his eloquence, which enabled him to deal with everything just as he pleased. In consequence of this Demosthenes neglected all other branches of learning, neglected all the sports of childhood, and laboriously practised and exercised himself in the art of oratory, meaning some day to become an orator himself. He studied rhetoric under Isaeus, although Isokrates was giving lessons at the same time, either, according to some writers, because, being an orphan, he was unable to raise the sum of ten minæ which Isokrates demanded as a fee, or because he thought that the vigorous invective of Isaeus was more what he required to learn. Hermippus informs us that he read in some anonymous work that Demosthenes was a scholar of Plato, and learned much of the art of speaking from him, while he mentions having heard from Ktesibius that Demosthenes had been lent the works of Isokrates and Alkidamas by one Kallias, a Syracusan, and some others, and that he used to read and practise himself in them in secret.