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Iconography

The image of Hermes evolved and varied along with Greek art and culture. In Archaic Greece he was usually depicted as a mature man, bearded, and dressed as a traveler, herald, or shepherd. This image remained common on the Hermai, which served as boundary markers, roadside markers, and grave markers, as well as votive offerings.

In Classical and Hellenistic Greece, Hermes was usually depicted as a young, athletic man lacking a beard. When represented as Logios (Greek: Λόγιος, speaker), his attitude is consistent with the attribute. Phidias left a statue of a famous Hermes Logios and Praxiteles another, also well known, showing him with the baby Dionysus in his arms.

At all times, however, through the Hellenistic periods, Roman, and throughout Western history into the present day, several of his characteristic objects are present as identification, but not always all together. Among these objects is a wide-brimmed hat, the petasos, widely used by rural people of antiquity to protect themselves from the sun, and that in later times was adorned with a pair of small wings; sometimes this hat is not present, and may have been replaced with wings rising from the hair.

Another object is the caduceus, a staff with two intertwined snakes, sometimes crowned with a pair of wings and a sphere. The caduceus, historically, appeared with Hermes, and is documented among the Babylonians from about 3500 BC. Two snakes coiled around a staff was also a symbol of the god Ningishzida, who, like Hermes, served as a mediator between humans and the divine (specifically, the goddess Ishtar or the supreme Ningirsu). In Greece, other gods have been depicted holding a caduceus, but it was mainly associated with Hermes. It was said to have the power to make people fall asleep or wake up, and also made peace between litigants, and is a visible sign of his authority, being used as a sceptre. A similar-appearing but distinct symbol is the Rod of Asclepius, associated with the patron of medicine and son of Apollo, Asclepius, which bears only one snake. The Rod of Asclepius, occasionally conflated with the caduceus in modern times, is used by most Western physicians as a badge of their profession. After the Renaissance, the caduceus also appeared in the heraldic crests of several, and currently is a symbol of commerce.

Hermes' sandals, called pédila by the Greeks and talaria by the Romans, were made of palm and myrtle branches but were described as beautiful, golden and immortal, made a sublime art, able to take the roads with the speed of wind. Originally, they had no wings, but late in the artistic representations, they are depicted. In certain images, the wings spring directly from the ankles. Hermes has also been depicted with a purse or a bag in his hands, wearing a robe or cloak, which had the power to confer invisibility. His weapon was a harpe, which killed Argos; it was also lent to Perseus to kill Medusa and Cetus.