The Great Gatsby, Chapter 4

Though Nick was first taken with Gatsby's seeming purity and optimism, Gatsby remains enigmatic and not entirely trustworthy. Gatsby's own account of his illustrious past seems comically exaggerated. His readiness to provide evidence to corroborate his story is itself suspect; an honest man, one imagines, would be insulted by Nick's skepticism.

The introduction of Meyer Wolfsheim serves to increase Nick's ­ and the reader's ­ doubts concerning Gatsby's virtue. Nick begins to suspect that the rumors of Gatsby's involvement with organized crime and bootlegging may not be entirely false.