This was one of those enigmas in which the Delphian oracle usually spoke, saying things with a double meaning, and which men were apt to take amiss. It was so now. The two princes drew lots which of them should first kiss their mother on his return; and they agreed to keep the oracle secret from their brother Sextus, lest he should be king rather than they. But Brutus was wiser than them both. As they left the temple together, he pretended to stumble and fell with his face to the ground. He then kissed the earth, saying, "The earth is the true mother of us all."
On their return to Rome the princes found that their father was at war. He was besieging the city of Ardea, which lay south of Rome; and as this city was strong and well defended the king and his army were kept a long while before it, waiting until famine, their ally, should force the inhabitants to surrender. While the army was thus waiting in idleness its officers had leisure for feasts and diversions, and one of the king's sons found time to indulge in fatal mischief. This arose from a supper in the tent of Prince Sextus, at which his brothers Titus and Aruns, and his cousin Tarquin of Collatia, were present.
While they feasted a dispute arose between them, as to which had the worthiest wife. It ended in a proposition of Tarquin, "Let us go and see with our own eyes what our wives are doing, and we can then best decide which is the worthiest." This proposition hit with their humor, and, mounting their horses, they rode to Rome. Here they found the wives of the three princes merrily engaged at a banquet. They then rode on to Collatia. It was now late at night, but they found Lucretia, the wife of their cousin, neither sleeping nor feasting, but working at the loom, with her handmaids busily engaged around her.
On seeing this, they all cried, "Lucretia is the worthiest lady." She ceased her work to entertain them, after which they took to their horses again, and rode back to the camp before Ardea.
But Sextus was seized with a vile passion for his cousin's wife, and a few days afterwards went alone to Collatia, where Lucretia received him with much hospitality, as her husband's kinsman. He treated her shamefully in return, forcing her, with wicked threats, to accept him as her lover and husband, in defiance of the laws of God and man.
As soon as Sextus had left her and returned to the camp, Lucretia sent to Rome for her father and to Ardea for her husband. Tarquin brought with him his cousin Lucius Junius, or Brutus the Dullard. When they arrived the lady, with bitter tears, told them of the wickedness of Sextus, and said, "If you are men, avenge it!" They heard her tale in horror, and swore to deeply revenge her wrong.
"I am not guilty," she now said; "yet I too must share in the punishment of this deed, lest any should think that they may be false to their husbands and live." As she spoke she drew a knife from her bosom and stabbed herself to the heart.
As they saw her fall, a cry of horror arose from her husband and father. But Brutus, who saw that the time had come for him to throw off his pretence of stupidity and act the man, drew the knife from the bleeding wound and held it up, saying, in solemn accents, "By this blood, I swear that I will visit this deed upon King Tarquin and all his accursed race! And no man hereafter shall reign as king in Rome, lest he may do the like wickedness."
He then handed the knife to the others, and bade them to take the same oath. This they did, wondering at the sudden transformation in Brutus. They then took up the body of the slain woman and carried it into the forum of the town, crying to the gathering people, "Behold the deeds of the wicked family of Tarquin, the tyrant of Rome!"