Hercule Poirot and Frank Howel Evans' Monsieur Poiret, a retired Belgian police officer living in London. A more obvious influence on the early Poirot stories is that of Arthur Conan Doyle. In "An Autobiography", Christie states, "I was still writing in the Sherlock Holmes tradition – eccentric detective, stooge assistant, with a Lestrade-type Scotland Yard detective, Inspector Japp". For his part, Conan Doyle acknowledged basing his detective stories on the model of Edgar Allan Poe's C. Auguste Dupin and his anonymous narrator, and basing his character Sherlock Holmes on Joseph Bell, who in his use of "ratiocination" prefigured Poirot's reliance on his
Louis Ellies Dupin both in his invectives against the "haughty critics" who inclined to rabbinism and the errors of Socinus. Although Dupin spoke favourably of Arnauld and signed the "Cas de conscience", he was not a Jansenist. Rather, on these matters he shared the opinions of Launoy, who "had found a way to be at once both demi-Pelagian and Jansenist". Dupin was pre-eminently a Gallican. It was probably on this account that Louis XIV had him exiled to Châtellerault, on the occasion of the "Cas de conscience". Dupin retracted and returned, but his chair in the College of France was irretrievably lost. Later