„“You do well. Method and order, they are everything,” replied Poirot.“

— Agatha Christie
„“Well, what are you doing? What have you done?”“I am sitting in this char,” said Poirot. “Thinking,” he added.“Is that all?” said Mrs. Oliver.“It is the important thing,” said Poirot.“
— Agatha Christie
„I like to inquire into everything. Hercule Poirot is a good dog.“
— Agatha Christie
„But how much are the delicate convolutions of the brain influenced by the digestive apparatus? When the mal de mere seizes me I, Hercule Poirot, am a creature with no grey cells, no order, no method — a mere member of the human race somewhere below average intelligence!“
— Agatha Christie
„“Tcha! Tcha!” cried Poirot irritably. “You argue like a child.”“
— Agatha Christie
„Poirot twinkled at her gently.“
— Agatha Christie
„What's wrong with my proposition?" Poirot rose. "If you will forgive me for being personal-I do not like your face, M. Ratchett.“
— Agatha Christie
„Becoming an artist does not merely mean learning something, acquiring professional techniques and methods. Indeed, as someone has said, in order to write well you have to forget the grammar.“
— Andrei Tarkovsky
„Everyone likes talking about himself. - Hercule Poirot“
— Agatha Christie
„"I saw a particular personage and I threatened him — yes, Mademoiselle, I, Hercule Poirot, threatened him.""With the police?""No," said Poirot drily, "With the Press — a much more deadly weapon."“
— Agatha Christie