Analyzing Symbolism Structure

In the following excerpt from a literary analysis, the author examines the use of symbolism in a classic novel. The author organizes the discussion into three main sections, each focusing on a different symbol. Analyze how this organizational structure contributes to the overall argument.

"In many ways, the recurring imagery of water in *Moby Dick* serves as a dual symbol of life and destruction. Firstly, the character of Ishmael illustrates water's nurturing qualities through his reflections while on the Pequod, showing how it offers both solace and connection to the broader universe. However, as the journey progresses, the ocean becomes increasingly menacing, culminating in Ahab's tragic obsession, showcasing the destructive potential of nature. Finally, the epilogue returns to water, suggesting a cyclical view of existence, where life and death coexist within the same element. This tripartite structure allows readers to grasp the complexity of Melville’s themes, revealing how each symbol interacts within the narrative framework."