Doryphoros (Spear Bearer)

Marble statue of Aphrodite of Knidos
Originally cast in bronze by the artist Polykeitos, this is a Roman copy of the statue in marble. Romans adored Greek art and frequently attempted to copy it. Polykeitos was an important player in Western art, because he was the first to write a canon on perfect sculpting practice. He used ratios and proportions to devise what he thought of as the "perfect man," and came up with the notion that the human body should be 7 heads tall. A century later, Lysippos would enter the scene and argue that the perfect human body was 8 heads tall. Today, we teach aspiring artists to draw their figures roughly 7.5 heads tall.
Photo credit / Unknown Art History Teaching Resources