Context: The first one, the character is avoiding going to his best friend’s house because he doesn’t want to see his wife who’s mutually in love with him. The second, Chernyshevsky randomly spends a super long amount of time talking about a type of person that he really likes which will have no bearing on the story.
I only know this name from the metro station from times I’ve visited Saint Petersburg. “Chernyshevsky? Cool they named a guy after that stop, it was a pretty good one I guess.”