Explain what Gene has learned by coming back to Devon fifteen years after he was a student there?

Much like the character of Scout in To Kill a Mockingbird, Gene is looking at his time at Devon in retrospect. Thethe tone is colored with nostalgia, and tempered with the narrator's feelings about his past. Even the narrator's recollections are filtered through his present experience and interest; at times, he speaks of the events of his past as if they were just happening, but then he breaks the spell with some adult commentary. This gives the reader a very full perspective og Gene's experience.