Moby Dick: Good and Evil The moral ambiguity of the universe is prevalent throughout Melville's Moby Dick. None of the characters represent pure evil or pure goodness. Even Melville's description of Ahab, whom he repeatedly refers to "monomaniacal," suggesting an amorality or psychosis, is given a chance to be seen as a frail, sympathetic character. When Ahab's "monomaniac" fate is juxtaposed with that of Ishmael, that moral ambiguity deepens, leaving the reader with an ultimate unclarity of principle. The final moments of Moby Dick bring the novel to a terse, abrupt climax. The mutual destruction of the Pequod and the White Whale, f