Print and play Flame Noir Find-A-Quote No. 3 for free. This installment features an often mis-credited and misquoted classic Hercule Poirot quote: “It is the brain, the little gray cells on which one must rely. The senses mislead. One must seek the truth within – not without.” Often cited as being found in “The Mysterious Affair at Styles”, this quote actually appears in the collection, “Poirot Investigates”, (by Agatha Christie, published 1925), and can be found in the short story titled “The Disappearance of Mr. Davenheim” (Chapter IX, page 127).