The Murders in the Rue Morgue Poe's Dupin displays many traits which became literary conventions in subsequent fictional detectives, including Sherlock Holmes and Hercule Poirot. Many later characters, for example, follow Poe's model of the brilliant detective, his personal friend who serves as narrator, and the final revelation being presented before the reasoning that leads up to it. Dupin himself reappears in "The Mystery of Marie Rogêt" and "The Purloined Letter". The unnamed narrator of the story opens with a lengthy commentary on the nature and practice of analytical reasoning, then describes the circumstances under which he first met Dupin during an extended visit to Paris.
Louis Ellies Dupin the opening part of his second volume of "Remarques". Petit-Didier's observations often seem inspired by prejudices of his time. Thus Dupin had placed St. Macarius the Egyptian in the 4th century, to which indeed he rightly belongs. Having discovered Semipelagianism in this author's works, Petit-Didier concluded that Macarius should come after Pelagius and St. Augustine (II, 198). In reality similar ideas had been professed by many before St. Augustine's time. A more formidable enemy appeared in Bossuet, who, during a public thesis at the Collège de Navarre in 1692, condemned Dupin's audacity. Dupin answered him and Bossuet appealed to the