As for learning, they had just what was necessary and no more, their education being directed chiefly to making them obedient, laborious, and warlike. They went barefoot, and for the most part naked. They were trained to steal with astuteness, to suffer pain and hunger, and to express themselves without an unnecessary word. Dignified poetry and music were encouraged. To the end of his life, the Spartan was kept ever in mind that he was born, not for himself, but for his country; the city was like one great camp, where each had his stated allowance and his stated public charge. Let us turn now to Numa Pompilius, the great law-giver of the Romans. A Sabine of illustrious virtue and great simplicity of life, he was elected to be king after the interregnum which followed on the disappearance of Romulus. He had spent much time in solitary wanderings in the sacred groves and other retired places; and there, it is reported, the goddess Egeria communicated to him a happiness and knowledge more than mortal. Numa was in his fortieth year, and was not easily persuaded to undertake the Roman kingdom. But his disinclination was overcome, and he was received with loud acclamations as the most pious of men and most beloved of the gods. His first act was to discharge the body-guard provided for him, and to appoint a priest for the cult of Romulus. But his great task was to soften the Romans, as iron is softened by fire, and to bring them from a violent and warlike disposition to a juster and more gentle temper. For Rome was composed at first of most hardy and resolute men, inveterate warriors. To reduce this people to mildness and peace, he called in the assistance of religion. By sacrifices, solemn dances, and processions, wherein he himself officiated, he mixed the charms of festal pleasure with holy ritual. He founded the hierarchy of priests, the vestal virgins, and several other sacred orders; and passed most of his time in performing some religious function or in conversing with the priests on some divine subject. And by all this discipline the people became so tractable, and were so impressed with Numa's power, that they would believe the most fabulous tales, and thought nothing impossible which he undertook. Numa further introduced agriculture, and fostered it as an incentive to peace; he distributed the citizens of Rome into guilds, or companies, according to their several arts and trades; he reformed the calendar, and did many other services to his people.