...we see patterns. During the 19th century, Romanticism's prevailing philosophies, values, and aesthetics appear to have been moving away from what came before...
Article contrasts Diderot's and Rousseau's philosophies in the context of their approaches to the budding Industrial Revolution.
In particular, see this article's opening and conclusion.
See section, "Ruskin & Beaudelaire on the Ideal Artist-Poet" for Diderot's take on emotion & reason.
See first 3 sections regarding the importance of the individual in all aspects of life.
La Traviata, Brindisi, by Giuseppi Verde, first performed 1853