Artemis Fowl Morality (or Moral Ambiguity) Quotes

How we cite our quotes: (Chapter.Paragraph)

Quote #10

The fairy had saved both their lives and yet he insisted on holding her to ransom. To a man of honor like Butler, this was almost more than he could bear. (9.40)

Why does Butler go along with Artemis's schemes if he finds them morally repugnant? While it's true he takes orders from him, Artemis couldn't actually do anything without Butler's help.