What is the theme of heart of darkness chapter 2

Can someone give me the main topics discussed in english segment 2 dba ( lesson 3.09 )

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.

What comparison best describes daniel defoe’s a journal of the plague year and samuel pepys diary