In the context of Monomaniac of Envy, explain the Description of the Background.
The Portraits of the Insane depict patients from the Paris mental hospitals La Salpêtrière and Bicêtre.: 14   Art historians have described the portraits as significant for their "unprecedented objective sobriety,” observing that they "have a powerful realism that is entirely unaffected by romantic sentiment or artistic dramatization.”
La Salpêtrière Bicêtre