“The things young women read nowadays and profess to enjoy positively frighten me.”

“Do you not realize, Hastings, that each and everyone of us is a complete mystery with layers. We each try to judge each other, but nine times out of ten, we are wrong.”

“What they need is a little immorality in their lives. Then they wouldn't be so busy looking for it in other people's.”

“How little you might know of a person after living in the same house with them!”

“Because when you’re in love, you think you’re invincible. It blinds you. And you don’t seem to care.”

“No innocent person ever has an alibi.”

“Never part with information unnecessarily. That's my rule,”

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

“The truth is people are an extraordinary mixture of heroism and cowardice.”

“This is no time for refusing to look facts in the face.”

“the truth is never horrible, only interesting.”

“There are questions that you don't ask because you're afraid of the answers to them.”

“The expected has happened, and when the expected happens, it always causes me emotion.”

“When the fact doesn't meet the theory then let go the theory.”

“The rottenness comes from within.”

“How fast you go. You arrive at a conclusion much sooner than I would permit myself to do.”

“Fortunately words, ingeniously used, will serve to mask the ugliness of naked facts.”

“I just woke up feeling happy this morning. You know those days when everything in the world seems right.”

“Mrs. Cavendish: I am charming to my friends one day, and forget all about them the next.”

“What can I say at seventy-five? "Thank God for my good life,and for all the love that has been given to me.”

“When will a woman lie? Sometimes for herself. Usually for the man she loves. Always for her children.”

“Youth is a failing only too easily outgrown.”

“I have, let me confess it in all humility, a pitiful human wish that someone should know just how clever I have been”

“That's the curious part about speaking the truth. No one does believe it.”

No, I wouldn't. I wouldn’t tell a soul.' 'People who use that phrase are always the last to live up to it.”

“It is deplorable...to remove all the romance - all the mystery!”

“It is always a shock to meet again someone whom you have not seen for a long time but who has been very much present in your mind during that period.”

“Life itself is an unsolved mystery", said the clergyman gravely.”

“One gets infected, it is true, by the style of a work that one has been reading.”

“The impossible cannot have happened, therefore the impossible must be possible in spite of appearances.”

“What you do not understand is that there are things that cannot be bought.”

“The spoken word and the written - there is an astonishing gulf between them. There is a way of turning sentences that completely reverses the meaning.”

“The dog hunts rabbits. Hercule Poirot hunts murderers.”

“Truth is seldom romantic.”

“How true is the saying that man was forced to invent work in order to escape the strain of having to think.”

“If the little grey cells are not exercised, they grow the rust.”

“In every profession and walk of life there is someone who is vulnerablle to temptation. (Mr. Barnes)”

“One does see so much evil in a village,' murmured Miss Marple in an explanatory voice.”

“A diary is useful for recording the idiosyncrasies of other people—but not one’s own.”

“Why didn't they ask the Evans?”

“Try and vary your methods as you will, your tastes, your habits, your attitude of mind, and your soul is revealed by your actions.”

“Hasting - There are times when it is one's duty to assert oneself.”

“When you're in the middle of a nightmare, something ordinary is the only hope. Anyway, ordinary things are the best. I've always thought so.”

“Oh, yes. I've no doubt in my own mind that we have been invited here by a madman-probably a dangerous homicidal lunatic.”

“Poirot thought it not quite professional to begin a routine working day before ten.”

“Ah, but my dear sir, the why must never be obvious. That is the whole point.”

“If the fact will not fit the theory - let the theory go”

“It is a curious thought, but it is only when you see people looking ridiculous that you realize just how much you love them”

“I am not mad. I am eccentric perhaps--at least certain people say so; but as regards my profession. I am very much as one says, 'all there.”

“Any coincidencce is worth noticing. You can throw it away later if it is only a coincidence.”