“I am all that there is of the most real.”

“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.”

“No, my friend, I am not drunk. I have just been to the dentist, and need not return for another six months! Is it not the most beautiful thought?--Poirot”

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

“Nowadays, no one believes in evil. It is considered, at most, a mere negation of good. Evil, people say, is done by those who know no better - who are undeveloped - who are to be pitied rather than blamed. But, M. Poirot, evil is real! It is a fact! I believe in Evil as I believe in Good. It exists! It is powerful! It walks the earth!' He stopped. His breath was coming fast. He wiped his forehead with his handkerchief and looked suddenly apologetic. 'I'm sorry. I got carried away.”

“Underneath the quarrels,the misunderstandings, the apparent hostility of everyday life, a real and true affection can exist. Married life, I mused, as I went to bed,was a curious thing.”

“But I know human nature, my friend, and I tell you that, suddenly confronted with the possibility of being tried for murder, the most innocent person will lose his head and do the most absurd things.”