Agatha Christie, Cards on the Table

"He has neither what I call the outward vision (seeing details all around you what is called an observant person) nor the inner vision--concentration, the focusing of the mind on one object. He has a purposefully limited vision. He sees only what blends and harmonises with the bent of his mind."

"Speech is the deadliest of revealers.' - Hercule Poirot, Cards on the Table"

"Do you believe in the value of truth, my dear, or don’t you?”“Of course I believe in the truth,” said Rhoda, staring.“Yes, you say that, but perhaps you haven’t thought about it. The truth hurts sometimes – and destroys one’s illusions.”“I’d rather have it all the same.” said Rhoda. “So would I. But I don’t know that we’re wise.”Mrs. Oliver; Rhoda Dawes"