So you find nothing remotely poignant, even superficially so, in Empire? Luke's scenes with Vader in the closing minutes of Jedi? As someone fascinated by dialogue and screenwriting, I'm of the opinion that the most remarkable lines are fairly pithy. In a science fiction context, they tap into some universal truth about humanity and condense the message to a few words, all the while relating to the film's universe. Obviously, you're not going to get an MLK speech out of Star Wars, but there still are many subtly inspirational lines.
I'm not going to spend 5 seconds of my time contrasting those with the prequels because I'm preaching to the choir here, but the only lines from the prequels that truly resonated with me all came from Yoda, and even those were few and far between.