substance

The purpose of art is not to reproduce what is already given (which would be superfluous), nor to create something in the pure play of subjective fancy (which can only be transitory and must necessarily be a matter of complete indifference to other people), but to press forward into the whole of the external world and the soul, to see and communicate those objective realities within it which rule and convention have hitherto concealed.

-- Max Scheler The Nature of Sympathy
Translated by Peter Heath