No human being can undergo a greater degree of unhappiness.
 Stendhal, The Red and the Black (1830). copy citation

add
Author Stendhal
Source The Red and the Black
Topic unhappiness
Date 1830
Language English
Reference
Note Translated by Horace B. Samuel
Weblink https://en.wikisource.org/wiki/The_Red_and_the_Black

Context

“He listened to these detailed confidences of the love she had experienced for others in that very avenue of pines where he had waited so few days ago for one o'clock to strike that he might invade her room. No human being can undergo a greater degree of unhappiness. This kind of familiar cruelty lasted for eight long days. Mathilde sometimes seemed to seek opportunities of speaking to him and sometimes not to avoid them; and the one topic of conversation to which they both seemed to revert with a kind of cruel pleasure, was the description of the sentiments she had felt for others.” source