“I like to inquire into everything. Hercule Poirot is a good dog.”

“Everyone likes talking about himself. - Hercule Poirot”

““You do well. Method and order, they are everything,” replied Poirot.”

“I like dogs
Big dogs
Little dogs
Fat dogs
Doggy dogs
Old dogs
Puppy dogs
I like dogs
A dog that is barking over the hill
A dog that is dreaming very still
A dog that is running wherever he will
I like dogs.”

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

“For Poirot, uttering a hoarse and inarticulate cry, again annihilated his masterpiece of cards and putting his hands over his eyes swayed backwards and forwards, apparently suffering the keenest agony.
“Good heavens Poirot!” I cried. “What is the matter? Are you taken ill?””

“Oh, dear, it's quite true what Dr. Reilly said. How does one stop writing? If I could find a really good telling phrase… Like the one M. Poirot used. In the name of Allah, the Merciful, the Compassionate… Something like that.”

“You spoke the truth, Percy Jackson. You are nothing like… like Hercules. I am honored that you carry this sword.”

“Everything I know, I learned from dogs.”

“I like to see an angry Englishman,” said Poirot. “They are very amusing. The more emotional they feel the less command they have of language.”