Greed, Corruption, the Search of One’s Self and the 1920's The characters' search of their own identities and the struggle that ensues is the most suffusive theme throughout The Great Gatsby . The fact that we never really know the characters, and the corrupt immoral things they do, directly represent the 20's high society lifestyle. The characters continued to cheat on their spouses, let money become their obsession, and debated the American dream for the hopes of one day obtaining happiness. But the fact remains that they have no true mor ....