Of course, what characters say is a great way of identifying the kind of characters that they are. A lot of the characteristics we are given about Mrs. Jones, the famous character from this story, can be deduced from the kind of things that she says. Consider the following example:
I have done things, too, which I would not tell you, son--neither tell God, if He didn't already know. Everybody's got something in common.
What is fascinating about this quote is the way that it shows the sympathy, empathy and understanding of Mrs. Jones towards Roger. She does not give him a massive lecture and tell him off, instead she just says that she has done things that she is ashamed of as well, and then leaves it at that. Establishing this connection is something that helps their friendship, and means that the impact of Mrs. Jones on Roger's life is one that will last forever.