Hercule Poirot sort of obsessive-compulsive" in Poirot. As mentioned in "Curtain" and "The Clocks", he is fond of classical music, particularly Mozart and Bach. In "The Mysterious Affair at Styles", Poirot operates as a fairly conventional, clue-based and logical detective; reflected in his vocabulary by two common phrases: his use of "the little grey cells" and "order and method". Hastings is irritated by the fact that Poirot sometimes conceals important details of his plans, as in "The Big Four". In this novel, Hastings is kept in the dark throughout the climax. This aspect of Poirot is less evident in the later novels,
Hercule Poirot appears to be no reference to this in Christie's writings, but the town of Ellezelles cherishes a copy of Poirot's birth certificate in a local memorial 'attesting' Poirot's birth, naming his father and mother as Jules-Louis Poirot and Godelieve Poirot. Christie wrote that Poirot is a Catholic by birth, but not much is described about his later religious convictions, except sporadic references to his "going to church". Christie provides little information regarding Poirot's childhood, only mentioning in "Three Act Tragedy" that he comes from a large family with little wealth, and has at least one younger sister. Apart from French