The three prominent themes that I've found in Ralph Ellison's Invisible Man the definition of freedom, expectations versus reality, and the effects of conformity.  definition the theme of the definition of freedom comes from the vary views that the narrator has gotten from Black men that he comes across. Mr. Bledsoe sees freedom as having power over all others, while the vet sees it as doing what you want whenever you can do so. Expectations vs reality comes from the view of the narrator. The narrator's expectations of society are adversely affected by the reality of it.  another very prevalent seem is another very prevalent seem is the effects of conformity. Due to his conformity the narrator is punished, even though it is exactly what he was supposed to do it still did not end up being the right thing to do. All of these teams tied Together With Langston Hughes works of Refugee in America and I, Too. In refugee in America the themes of freedom and expectation vs reality are discussed.  The speaker is has this idea of freedom that is not met by reality.  in I too, one can see the effects of conformity and how it insights a spark of Rebellion in the oppressed.