"“Tcha! Tcha!” cried Poirot irritably. “You argue like a child."

“Words had become to him a means of obscuring facts — not of revealing them. He was an adept in the art of the useful phrase — that is to say the phrase that falls soothingly on the ear and is quite empty of meaning.”

“The rottenness comes from within.”

“Ah, my friend, one may live in a big house and yet have no comfort.”

“It would be difficult Bland thought, to forget Hercule Poirot, and this not entirely for complimentary reasons.”

“‘I have often noticed that being a devoted wife saps the intellect,’ murmured Tommy.”

“We had three servants, which was a minimum then.”