Without the quote, it is difficult to provide an analysis of how it proves the theme. However, the theme of "A Sound of Thunder" by Ray Bradbury is typically considered to be the dangers of messing with the natural order of things and the butterfly effect. The story follows a time traveler who goes back to the prehistoric era to hunt a Tyrannosaurus Rex but accidentally steps on a butterfly. When he returns to the present, he finds that his actions have drastically altered the future, with political and ecological changes that have catastrophic consequences. The story serves as a warning about the potential consequences of tampering with the past and highlights the fragility of the natural world.
