When I grew up & watched the movie again. I found that my interests in this novel got more intense. Captain Ahab lost a leg in one encounter with the white whale & vowed to revenge. The whaling ship Pequod, however, was own & operated with the purpose of commercial profit, the welfare to the investors & the crewmen. But the Ahab's motivation & ambition ruined the whole operation, led to the destruction of the ship & the drowning of all crewmen except the story narrator Ishmel. It has been suggested that Hitler's adventure during WWII is awfully resemble to Captain Ahab's saga. Hitler fought on German side & got injured during WWI. German was in a shamble state after WWI with a running away inflation & jobless society. Hitler vowed to revenge. He found & set his demon to the Treaty of Versaillies & Jews. We know the rest of the story & it was so much like the fate of Ahab (Hitler) & Pequod (Germany). At the later stage of the WWII, it seemed there was no hope for German to win the war. But Hitler kept going & so some Germans rose to kill him but failed in the plot. Hitler than dragged all German people in a total defeat. The whole crew of Pequod perished except Ishmael who survived to tell us the story. Fortunately, many Germans survive to rebuild the country. If the scenario happened 2,200 years ago, the German might meet the same fate as Carthaginians---got wiped out from the map & history. A nation or people sometime got extinguished due to the lack of wisdom of the rulers. One example was 準噶爾 around 1757. 準噶爾汗國 and 準噶爾人 cease to exist and 準噶爾盆地 is only a geographical term (地理上的名詞) now.
A ship in a vast ocean is like a country in isolation. The captain is like a ruler with absolute power. In fact a ship with people on board is more like a totalitarian regime than a democratic society. 'Moby Dick' gives us some warning that we should not seek personal revenge by dragging other people in. It also gives us some lesson that we must use the reason (理性) & wisdom (智慧) to avoid conflict and war in dealing with the world affairs.