If the technical innovations of the Impressionists led merely to a more accurate representation of nature it was perhaps of not much value in enlarging their powers of expression.
For an Impressionist to paint from nature is not to paint the subject but to realize sensations.
I am an anarchist in politics and an impressionist in art as well as a symbolist in literature. Not that I understand what these terms mean but I take them to be all merely synonyms of pessimist.