miserable because if we were to replace poor in the paragraph with miserable we would get the same effect : ]
An excerpt from the text that suggests Kovaloff has not learned anything from his experience is: "<em>He returned joyfully, and regarded with a satirical expression two officers who were in the shop, one of whom possessed a nose not much larger than a waistcoat button</em>."
Here the character, a Major who lost his nose, is seen doing the same he did before his experience: joyfully shopping and mocking others, as though nothing happened. His personality is still arrogant and judgemental.
Cassius tells Cinna to deliver the forged letters from the "citizens" in Brutus's window. Cassius hopes Brutus will be convinced that the forged or fake letters are from the "citizens" thus convincing him to join the conspiracy.