...s on the screen and on TV. The character was introduced primarily as a narrative device to enable Conan Doyle to kill off Sherlock Holmes, and only featured directly in two of the Sherlock Holmes stories. However, on screen, he has been given a greater prominence and treated as Holmes' archenemy. Moriarty is extremely intelligent, cunning, calculative and manipulative. He is also incredibly ruthless, shown by his steadfast vow to Sherlock Holmes that "if you (Holmes) are clever enough to bring destruction down upon me (Moriarty), then I shall do as much for you (Holmes)". Moriarty is categorized by Holmes as an extremely powerful criminal mastermind who is purely adept at committing any atrocity to perfection without losing any sleep on it. Moriarty's ruthlessness, lack of empathy, intellect and grandiosity make it fair to label him as a sociopath: he sees people as either pawns to be manipulated, or obstacles to be destroyed. As such, Moriarty will do anything to achieve his goals. It is stated in The House of Silk that Moriarty does not directly participate in the activities he plans, but he only 'orchestrates' the events. However, he is not at all a coward: he is willing to take matters into his own hands if his hand is forced, such was the case with Sherlock Holmes.