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“The story is that while a child named Servius Tullius lay sleeping, his head burst into flames in the sight of many. The general outcry which so great a miracle called forth brought the king and queen to the place. One of the servants fetched water to quench the fire, but was checked by the queen, who stilled the uproar and commanded that the boy should not be disturbed until he awoke of himself. Soon afterwards sleep left him, and with it disappeared the flames. Then, talking her husband aside, Tanaquil Said: 'Do you see this child whom we are bringing up in so humble a fashion? Be assured he will one day be a lamp to our dubious fortunes, and a protector to the royal house in the day of its distress. Let us therefore rear with all solicitude one who will lend high renowen to the state and to our family.' It is said that from that moment the boy began to be looked upon as a son, and to be trained in the studies by which men are inspired to bear themselves greatly.”
― Livy, The History of Rome, Books 1-5: The Early History of Rome