After this Valerius called together the great Assembly of the Centuries, and they chose Sp. Lucretius, father of Lucretius, to succeed Brutus. But he was an old man, and in not many days he died. So M. Horatius was chosen in his stead.
The temple on the Capitol which King Tarquin began had never yet been consecrated. Then Valerius and Horatius drew lots which should be the consecrator, and the lot fell on Horatius. But the friends of Valerius murmured, and they wished to prevent Horatius from having the honor; so when he was now saying the prayer of consecration, with his hand upon the doorpost of the temple, there came a messenger, who told him that his son was just dead, and that one mourning for a son could not rightly consecrate the temple. But Horatius kept his hand upon the doorpost, and told them to see to the burial of his son, and finished the rites of consecration. Thus did he honor the gods even above his own son.
In the next year Valerius was again made consul, with T. Lucretius; and Tarquinius, despairing now of aid from his friends at Veii and Tarquinii, went to Lars Porsenna of Clusium, a city on the river Clanis, which falls into the Tiber. Porsenna was at this time acknowledged as chief of the twelve Etruscan cities; and he assembled a powerful army and came to Rome. He came so quickly that he reached the Tiber and was near the Sublician Bridge before there was time to destroy it; and if he had crossed it the city would have been lost. Then a noble Roman, called Horatius Codes, of the Lucerian tribe, with two friends—Sp. Lartius, a Ramnian, and T. Herminius, a Titian—posted themselves at the far end of the bridge, and defended the passage against all the Etruscan host, while the Romans were cutting it off behind them. When it was all but destroyed, his two friends retreated across the bridge, and Horatius was left alone to bear the whole attack of the enemy. Well he kept his ground, standing unmoved amid the darts which were showered upon his shield, till the last beams of the bridge fell crashing into the river. Then he prayed, saying, "Father Tiber, receive me and bear me up, I pray thee." So he plunged in, and reached the other side safely; and the Romans honored him greatly: they put up his statue in the Comitium, and gave him as much land as he could plough round in a day, and every man at Rome subscribed the cost of one day's food to reward him.
Then Porsenna, disappointed in his attempt to surprise the city, occupied the Hill Janiculum, and besieged the city, so that the people were greatly distressed by hunger. But C. Mucius, a noble youth, resolved to deliver his country by the death of the king. So he armed himself with a dagger, and went to the place where the king was used to sit in judgment. It chanced that the soldiers were receiving their pay from the king's secretary, who sat at his right hand splendidly apparelled; and as this man seemed to be chief in authority, Mucius thought that this must be the king; so he stabbed him to the heart. Then the guards seized him and dragged him before the king, who was greatly enraged, and ordered them to burn him alive if he would not confess the whole affair. Then Mucius stood before the king and said: "See how little thy tortures can avail to make a brave man tell the secrets committed to him"; and so saying, he thrust his right hand into the fire of the altar, and held it in the flame with unmoved countenance. Then the king marvelled at his courage, and ordered him to be spared, and sent away in safety: "for," said he, "thou art a brave man, and hast done more harm to thyself than to me." Then Mucius replied: "Thy generosity, O king, prevails more with me than thy threats. Know that three hundred Roman youths have sworn thy death: my lot came first. But all the rest remain, prepared to do and suffer like myself." So he was let go, and returned home, and was called "Scævola," or "The Left-handed," because his right hand had been burnt off.
King Porsenna was greatly moved by the danger he had escaped, and perceiving the obstinate determination of the Romans, he offered to make peace. The Romans gladly gave ear to his words, for they were hard pressed, and they consented to give back all the land which they had won from the Etruscans beyond the Tiber. And they gave hostages to the king in pledge that they would obey him as they had promised, ten youths and ten maidens. But one of the maidens, named Cloelia, had a man's heart, and she persuaded all her fellows to escape from the king's camp and swim across the Tiber. At first King Porsenna was wroth; but then he was much amazed, even more than at the deeds of Horatius and Mucius. So when the Romans sent back Cloelia and her fellow-maidens—for they would not break faith with the king—he bade her return home again, and told her she might take whom she pleased of the youths who were hostages; and she chose those who were yet boys, and restored them to their parents.
So the Roman people gave certain lands to young Mucius, and they set up an equestrian statue to the bold Cloelia at the top of the Sacred Way. And King Porsenna returned home; and thus the third and most formidable attempt to bring back Tarquin failed.
When Tarquin now found that he had no hopes of further assistance from Porsenna and his Etruscan friends, he went and dwelt at Tusculum, where Mamilius Octavius, his son-in-law, was still chief. Then the thirty Latin cities combined together and made this Octavius their dictator, and bound themselves to restore their old friend and ally, King Tarquin, to the sovereignty of Rome.
P. Valerius, who was called "Poplicola," was now dead, and the Romans looked about for some chief worthy to lead them against the army of the Latins. Poplicola had been made consul four times, and his compeers acknowledged him as their chief, and all men submitted to him as to a king. But now the two consuls were jealous of each other; nor had they power of life and death within the city, for Valerius (as we saw) had taken away the axes from the fasces. Now this was one of the reasons why Brutus and the rest made two consuls instead of one king: for they said that neither one would allow the other to become tyrant; and since they only held office for one year at a time, they might be called on to give account of their government when their year was at an end.
Yet though this was a safeguard of liberty in times of peace, it was hurtful in time of war, for the consuls chosen by the people in their great assemblies were not always skilful generals; or if they were so, they were obliged to lay down their command at the year's end.
So the senate determined, in cases of great danger, to call upon one of the consuls to appoint a single chief, who should be called "dictator," or master of the people. He had sovereign power (Imperium) both in the city and out of the city, and the fasces were always carried before him with the axes in them, as they had been before the king. He could only be appointed for six months, but at the end of the time he had to give no account. So that he was free to act according to his own judgment, having no colleague to interfere with him at the present, and no accusations to fear at a future time. The dictator was general-in-chief, and he appointed a chief officer to command the knights under him, who was called "master of the horse."