Nick presents himself as a person of some ambition, privileged background (snobbishly moral in his description), and discusses how he thinks he was viewed by his peers in college.
People accused him of being a politician because he was agreeable and was in the confidence of many people.
Nick does not see this tendency as a strength. In fact, he learns to avoid people through various means when he feels they are about to confide in him. Furthermore, the moral gem that Nick's father once shared with him is challenged by these confessions of "wild, unknown men".
His father told him that not everyone was born with the same amount of moral sense.
His father also told him, prophetically, that “a sense of the fundamental decencies is parcelled out unequally at birth.”
While Nick suggests he would like to maintain a hopeful view of people, he admits that he has lost patience in this effort. He does not adhere to his father's bit of wisdom in his dealings with people because he has been privy to too many secrets from people who never seem to redeem themselves.
This complex attitude is expressed at turns implicitly and explicitly in the opening section of the novel.
Nick also reflects on his somewhat naive aspirations for his summer in the east. This innocent dreaming becomes significant as we later encounter the great dreamer, Jay Gatsby, and Nick finds a connection between himself and this grand figure.