Times in which letters and arts are known to have flourished have been admired too much.
Gist of Idea
The flourishing of arts and letters is too much admired
Jean-Jacques Rousseau (The Social Contract (tr Cress) , III.09 n9)
I assume most marxists would agree with this thought. Eighteenth century France is a good candidate for this judgement. The arts always needed patronage.
Rousseau,Jean-Jacques: 'The Basic Political Writings', ed/tr. Cress,Donald A. [Hackett 1987], p.191