In the next century which is the beginning of the Classical period, it was considered that beauty in visible things as in everything else, consisted of symmetry and proportions. The artists tried also to represent motion in a specific moment (Myron), which may be considered as the reappearance of the dormant Minoan element. Anatomy and geometry are fused in one, and each does something to the other. The Greek sculptors tried to clarify it by looking for mathematical proportions, just as they sought some reality behind appearances. Polykleitos in his Canon wrote that beauty consists in the proportion not of the elements (materials), but of the parts, that is the interrelation of parts with one another and with the whole. It seems that he was influenced by the theories of Pythagoras. The famous Apollo of Mantua and its variants are early forms of the Apollo Citharoedus statue type, in which the god holds the cithara in his left arm. The type is represented by neo-Attic Imperial Roman copies of the late 1st or early 2nd century, modelled upon a supposed Greek bronze original made in the second quarter of the 5th century BCE, in a style similar to works of Polykleitos but more archaic. The Apollo held the cythara against his extended left arm, of which in the Louvre example, a fragment of one twisting scrolling horn upright remains against his biceps.

Who wrote that beauty consists in the proportion not of the elements?