From his youth Themistocles had been of a vehement and impetuous nature, of a quick intelligence, and a strong and aspiring bent for action and great affairs. The holidays and intervals in his studies he did not spend in play or idleness, as other children, but would be always inventing or arranging some oration or speech to himself, so that his master would often say to him: "You, my boy, will be nothing small, but great one way or other, for good or else for bad." He received reluctantly and carelessly instructions given him to improve his manners and behaviour, or to teach him any pleasing or graceful accomplishment, but whatever was said to improve him in sagacity or in management of affairs, he would give attention to beyond one of his years. And when in company he was obliged to defend himself because he could not play on any stringed instrument,[3] he would retort that though he could not do that, yet were a small and obscure city put into his hands, he would make it great and glorious. It is said that Themistocles was so transported with the thoughts of glory, and so inflamed with the passion for great actions, that though he was still young when the battle of Marathon was fought, upon the skilful conduct of the general Miltiades being everywhere talked about, he was observed to be thoughtful, and reserved, alone by himself; he passed the nights without sleep, and avoided all his usual places of recreation, and to those who wondered at the change, and inquired the reason of it, he gave the answer that "the trophy of Miltiades would not let him sleep."[4] {155} This was the man who was now to help Athens, and he possessed the very qualities most needed in the serious position in which she found herself. For Themistocles was a man whose natural force was unmistakable; this was the quality for which he was distinguished above all other men; from his own native acuteness, and without any study either before or at the time, he was the ablest judge of the course to be pursued in a sudden emergency, and could best divine what was likely to happen in the remotest future. Whatever he had in hand he had the power of explaining to others, and even where he had no experience he was quite competent to form a sufficient judgment; no one could foresee with equal clearness the good or evil intent which was hidden in the future. This foresight was shown in the belief held by Themistocles, who "when others were of opinion that the battle of Marathon would be an end to the war, thought it was but the beginning of far greater conflicts,"[5] and because of this belief he did his best to encourage the Athenians to be ready for whatever might happen.