Art as Representation or Mimesis. Representation of art as an imitation or copying became the mainstream meaning of art in Greece. Plato first developed the idea of art as “mimesis,” which, in Greek, means copying or imitation. How immaculately it replicated the original subject became the measure of its value.
Art as Expression of Emotional content. Dramatic, sublime and heartfelt art becomes a way to express oneself during the Romantic movement , with audience response becoming key to the valuation of the content. The emotions that were felt when the art was witnessed became its barometer for success.
Art as Form. Formal qualities of art became influential in the 18th century, with the principles of art and design, like balance, rhythm, harmony and unity became as important as the content of the work of art.