Dr. Constantine Quotes in Murder on the Orient Express
"Perfectly," said Poirot. "The matter begins to clear itself up wonderfully! The murderer was a man of great strength—he was feeble—it was a woman—it was a right-handed person—it was a left- handed person. Ah! c'est rigolo, tout ça!"
"A woman's handkerchief," said the doctor. "Our friend the chef de train was right. There is a woman concerned in this."
"And most conveniently she leaves her handkerchief behind!" said Poirot. "Exactly as it happens in the books and on the films—and to make things even easier for us, it is marked with an initial."
“It is the psychology I seek, not the fingerprint or the cigarette ash. But in this case I would welcome a little scientific assistance. This compartment is full of clues, but can I be sure that those clues are really what they seem to be?"
"I do not quite understand you, M. Poirot."
"Well, to give you an example—we find a woman's handkerchief. Did a woman drop it? Or did a man, committing the crime, say to himself: 'I will make this look like a woman's crime.
Then everyone jumped as Dr. Constantine suddenly hit the table a blow with his fist. "But no," he said. "No, no, and again no! That is an explanation that will not hold water. It is deficient in a dozen minor points. The crime was not committed so—M. Poirot must know that perfectly well."