By the peace of Antaleidas things had been so settled that the Spartans had the chief power over Greece, and they used it in their proud, harsh way.  In the year 387 they called the Thebans to assist in besieging the city of Mantinea, in a valley between Argos and Arcadia.  The Mantineans sallied out, and there was a battle, in which they were defeated; but in the course of it a Theban youth of a rich and noble family, named Pelopidas, was surrounded by enemies.  He fought desperately, and only fell at last under seven wounds just as another Theban, a little older, named Epaminondas, broke into his rescue, and fought over him until the Spartans made in and bore them off, but not till Epaminondas had likewise been badly wounded.  He was the son of a poor but noble father, said to be descended from one of the men who had sprung from the dragon’s teeth; and he had been well taught, and was an earnest philosopher of the Pythagorean school, striving to the utmost of his power to live a good and virtuous life.  A close friendship grew up between him and Pelopidas, though the one loved books, and the other, dogs and horses; but Pelopidas tried to be as upright and noble as his friend, and, though a very rich man, lived as hardily and sparingly as did Epaminondas, using his wealth to help the poor.  When some foolish friends asked him why he did not use his riches for his own ease and pomp, he laughed at them, and, pointing to a helpless cripple, said that riches were only useful to a man like that.