Some people seem easy to understand: they are obvious when they meet for the first time.
The first part is the 1 segment. The main meaning is that this is not an easy job, because they are not always what they appear to be. It is not easy to judge a person, because they are not always what they seem.
The second part is paragraphs 2-3. Eduard Burton, a kind and gentle businessman, seems reluctant to hurt a fly. The overall impression of Burton is that he is a kind and elegant person.
, wealthy businessman.
The third part is paragraph 4 -5 1. It turns out that Burton has enough courage to send a friend to the wall. From Burton's mouth, the narrator knows his true nature, a man with two faces.