The concept of Individual Value did not exist in ancient times, it was the Catholic Church that brought this concept to Christian Europe:
"The recognition by law of the intrinsic value of each human being did not exist in ancient times. Among the Romans, law protected social institutions such as the patriarchal family but it did not safeguard the basic rights of the individual, such as personal security, freedom of conscience, of speech, of assembly, of association, and so forth. For them, the individual was of value ‘only if he was a part of the political fabric and able to contribute to its uses as though it were the end of his being to aggrandize the state’. According to Benjamin Constant, a great French political philosopher, it is wrong to believe that people enjoyed individual rights prior to Christianity. In fact, as Fustel de Coulanges put it, the ancients had not even the idea of what it means.
In 390, Bishop Ambrose, who was located in Milan, forced Emperor Theodosius to repent of his vindictive massacre of seven thousand people. The fact indicates that under the influence of Christianity, nobody, not even the Roman emperor, would be above the law. And in the thirteenth century, Franciscan nominalists were the first to elaborate legal theories of God-given rights, as individual rights derived from a natural order sustained by God’s immutable laws of ‘right reason’. "
(Excerpted from: The Christian foundations of the rule of law in the West: a legacy of liberty and resistance against tyranny, by Augusto Zimmerman)
"The recognition by law of the intrinsic value of each human being did not exist in ancient times. Among the Romans, law protected social institutions such as the patriarchal family but it did not safeguard the basic rights of the individual, such as personal security, freedom of conscience, of speech, of assembly, of association, and so forth. For them, the individual was of value ‘only if he was a part of the political fabric and able to contribute to its uses as though it were the end of his being to aggrandize the state’. According to Benjamin Constant, a great French political philosopher, it is wrong to believe that people enjoyed individual rights prior to Christianity. In fact, as Fustel de Coulanges put it, the ancients had not even the idea of what it means.
In 390, Bishop Ambrose, who was located in Milan, forced Emperor Theodosius to repent of his vindictive massacre of seven thousand people. The fact indicates that under the influence of Christianity, nobody, not even the Roman emperor, would be above the law. And in the thirteenth century, Franciscan nominalists were the first to elaborate legal theories of God-given rights, as individual rights derived from a natural order sustained by God’s immutable laws of ‘right reason’. "
(Excerpted from: The Christian foundations of the rule of law in the West: a legacy of liberty and resistance against tyranny, by Augusto Zimmerman)