When Nick first interacts with Jay Gatsby, ironically he doesn’t even know it is Gatsby to whom he is speaking. Once he realizes he is in Gatsby’s presence, he makes a very iinteresting observation about the way Gatsby speaks. He notes that Gatsby appears to be choosing his words with care. This is rather insightful and makes sense once we discover that Gatsby has reinvented himself to impress Daisy. It would appear that he was trying to impress Nick, as well. It should be noted that Nick does not judge Gatsby after first meeting him. We come to accept Nick as a reliable narrator who doesn’t pass judgment on the other characters, so we believe in his assessment of Gatsby.