Lady Justice is an allegoricalpersonification of the moral force in judicial systems. Her attributes are a blindfold, a beam balance, and a sword. She often appears as a pair with Prudentia, who holds a mirror and a snake. Lady Justice originates from the personification of Justice in Ancient Roman art known as Iustitia or Justitia after Iustitia, who is equivalent to the Greek goddesses Themis and Dike.
The goddess Iustitia
The origin of Lady Justice was Iustitia, the goddess of Justice within Roman mythology. Iustitia was introduced by emperor Augustus, and was thus not a very old deity in the Roman pantheon. Justice was one of the virtues celebrated by emperor Augustus in his clipeus virtutis, and a temple of Iustitia was established in Rome on 8 January13 BC by emperor Tiberius. Iustitia became a symbol for the virtue of justice with which every emperor wished to associate his regime; emperor Vespasian minted coins with the image of the goddess seated on a throne called Iustitia Augusta, and many emperors after him used the image of the goddess to proclaim themselves protectors of justice. Though formally called a goddess with her own temple and cult shrine in Rome, it appears that she was from the onset viewed more as an artistic symbolic personification rather than as an actual deity with religious significance.
Depiction
The personification of justice balancing the scales dates back to the goddess Maat, and later Isis, of ancient Egypt. The Hellenic deities Themis and Dike were later goddesses of justice. Themis was the embodiment of divine order, law, and custom, in her aspect as the personification of the divine rightness of law.
Scales
Lady Justice is most often depicted with a set of scales typically suspended from one hand, upon which she measures the strengths of a case's support and opposition. The Greek goddess Dike is depicted holding a set of scales. Bacchylides, Fragment 5 :
If some god had been holding level the balance of Dike.
The scales represent the weighing of evidence, and the scales lack a foundation in order to signify that evidence should stand on its own.
Blindfold
Since the 16th century, Lady Justice has often been depicted wearing a blindfold. The blindfold represents impartiality, the ideal that justice should be applied without regard to wealth, power, or other status. The earliest Roman coins depicted Justitia with the sword in one hand and the scale in the other, but with her eyes uncovered. Justitia was only commonly represented as "blind" since the middle of the 16th century. The first known representation of blind Justice is Hans Gieng's 1543 statue on the Gerechtigkeitsbrunnen in Berne. Instead of using the Janus approach, many sculptures simply leave out the blindfold altogether. For example, atop the Old Bailey courthouse in London, a statue of Lady Justice stands without a blindfold; the courthouse brochures explain that this is because Lady Justice was originally not blindfolded, and because her "maidenly form" is supposed to guarantee her impartiality which renders the blindfold redundant. Another variation is to depict a blindfolded Lady Justice as a human scale, weighing competing claims in each hand. An example of this can be seen at the Shelby County Courthouse in Memphis, Tennessee.
Sword
The sword represented authority in ancient times, and conveys the idea that justice can be swift and final.
Toga
The Greco-Roman garment symbolizes the status of the philosophical attitude that embodies justice.