There is a lot to learn from the theme of the novel Moby-Dick. Like any book, there is a message or some sort of subliminal "moral of the story" type lesson that you can learn from Moby-Dick. The novel, Moby-Dick, can teach you a lot of things if you can stay focused long enough. However, the most important lesson that can be learned from this work is not so complicated and rather obvious. This lesson can be summed up in one sentence; don't become so focused and obsessed with one goal that you exclude the most important things in life. This lesson is represented by Ahab's particular obsession with hunting and killing a whale. By making this his most important goal in life, he begins to ignore more important things such as the lives of his crew members, and ultimately his own life. This mistake caused the death of Ahab. While the novel isn't trying to say that if you get too obsessed with one issue or problem in your life you'll die, it's just trying to say that if you put minor self-centered goals ahead of what's more important , you will do more than I will probably regret. This lesson is very true and can be compared to real cases compared to examples such as government dictatorships or social relations. For example, many dictatorships are led by a single person with overwhelming power over his or her nation. In most cases, this results in a greedy, out-of-control leader leading his country to certain downfall. Also, on a much more common scale, certain relationships can symbolize this teaching. For example, let's say a person is so attracted to another.