“It is the brain, the little gray cells on which one must rely. One must seek the truth within--not without." ~ Poirot”

“Excuse me, Monsieur Poirot. If you'd like to ask any questions, I'm sure the doctor wouldn't mind.Of course not. Of course not. Great admirer of yours, Monsieur Poirot. Little gray cells -- order and method. I know all about it.”

“If you are to be Hercule Poirot, you must think of everything.”

“I am not one to rely upon the expert procedure. It is the psychology I seek, not the fingerprint or the cigarette ash.”

“One must make one's own mistakes”

“Alas," murmured Poirot to his mustaches, "that one can only eat three times a day ...”

“To count - really and truly to count - a woman must have goodness or brains.”