«This miracle did not happen instantly. By studying the development of the human figure in Greek sculpture, we can see the perfection of naturalistic art emerging from the chrysalis of what went before. Archaic kouroi are stiff, stylized, portrayed frontally with their mystical smile. Like figures in the art of earlier civilizations, they are rigid as the stones from which they are carved. In the Kritios Boy of the early classical period the human form takes a revolutionary step out of the block of marble, turning his head and escaping the restraints of centuries. He is a synthesis of ethos (noble character) and pathos (emotion) never before achieved. Within a stunningly brief period of time, the representation of the human figure achieved its finest expression, idealized yet completely natural, in a bronze masterpiece called the Zeus of Artemiseion, frozen in perfect balance in the instant before he hurls a thunderbolt. The Greek miracle was complete.
– From Nicholas Gage, Introduction to The Greek Miracle: Classical Sculpture from the Dawn of Democracy, the Fifth Century B.C.