The following is from a work-in-progress called "Moby Dick: a Book Report" in which I read each chapter of Herman Melville's classic novel Moby Dick, and write about what I read.
In this short chapter, Captain Ahab sits alone in his cabin and gives a kind of Shakespearean soliloquy, reflecting on his anguished mental state and his unflagging purpose, saying things like "All loveliness is anguish to me" and "The path to my fixed purpose is laid with iron rails, whereon my soul is grooved to run."