What is the theme in Artemis Fowl by Eoin Colfer?

Courage is the main theme of the book. Throughout Artemis Fowl, the reader finds various acts of courage. Most of the main characters exhibit courage at one point or another, particularly as they try to save each other from danger. These acts of courage happen because of the bonds that the characters have for one another and their senses of duty and responsibility. Although Artemis is the main character, his actions are not necessarily guided as much by courage as they are by bravado and thought-out planning.