“You surprise me, Hastings. Do you not know that all celebrated detectives have brothers who would be even more celebrated than they are were it not for constitutional indolence?”
“You have a tendency, Hastings, to prefer the least likely. That, no doubt, is from reading too many detective stories.”
“If only-if only, Hastings, you would part your hair in the middle instead of at the side! What a difference it would make to the symmetry of your appearance. And your moustache. If you must have a moustache, let it be a real moustache-a thing of beauty such as mine.”
“They say all the world loves a lover—apply that saying to murder and you have an even more infallible truth.”
“Never tell all you know—not even to the person you know best.”
“Vous eprouves trop d'emotion, Hastings, It affects your hands and your wits. Is that a way to fold a coat? And regard what you have done to my pyjamas. If the hairwash breaks what will befall them?''Good heavens, Poirot,' I cried, 'this is a matter of life and death. What does it matter what happens to our clothes?''You have no sense of proportion Hastings. We cannot catch a train earlier than the time that it leaves, and to ruin one's clothes will not be the least helpful in preventing a murder.”
“Unless you are good at guessing, it is not much use being a detective.”