Diction

"He didn't say anymore but we've always been unusually communicative in a reserved way, and I understoood that he meant a great deal more than that. In consequence, I'm inclined to reserve all judgments, a habit that has opened up many curious natures to me and also made me the victim of not a few veteran bores. The abnormal mind is quick to detect and attach itself to this quality when it appears in a normal person, and so it came about in college I was unjustly accused of being a politician, because I was privy to the secret griefs of wild, unknown men. Most of the confidences were unsought-- frequently I have feigned sleep, preoccupation, or a hostile levity when I realized by some unmistakable sign that an intimate revelation was quivering on the horizon;for the intimate revelations of young men, or at least the terms in which they express them, are usually plagiaristic and marred by obvious suppressions."
6 words: Reserved, abnormal, privy, unsought, feigned, and plagiaristic.
These words reveal or represent the characteristics of the present narrator. The word "reserved" is used to show how he has to act in order to succeed. The words "abnormal", "feigned", and "plagiaristic" express how the character has to act in order to be sneaky and/or succeed in the game he is playing. It conveys the author's assertion or impacts the audience by the author explaining or repeating this some sort of "unsought" or sneakiness. The author creates this image that the main character will be a sneaky man.