Final answer:
More context is needed to accurately address how Mr. Moskowitz's opinion of the narrator changes over the course of their conversation, which is not provided here.
Step-by-step explanation:
The question pertains to the shifting opinion of a character named Mr. Moskowitz towards the narrator over the course of their conversation. However, since no specific text is referenced, it is not possible to provide a detailed analysis of Mr. Moskowitz's changing opinion. To properly answer this question, more context is needed, such as which novella or text these characters are from.
Typically, one would look into the dialogue and the interaction between Mr. Moskowitz and the narrator to identify the nuances of their relationship and how it evolves. Key moments in their conversation, their reactions to each other, and the underlying emotions or motivations would provide insight into Mr. Moskowitz's change of opinion.