The Meaning Behind Moby Dick

Humans spend their entire life running towards obsessions, perfection, something is not available to them because ther are simply...human. And finally they get destroyed by this "unreachable" that has a different meaning for every man. Like captain Achab, who died because of the big white whale, Moby Dick, his only purpose since the ship left Nuntacket's harbour.

He obsessively follow the whale to have his revenge (Moby Dick ate his leg during a previous hant), and he spent his entire life thinking about his revenge without living a real and full life.