But how much are the delicate convolutions of the brain influenced by the digestive apparatus? When the mal de mere seizes me I, Hercule Poirot, am a… - Agatha Christie

Iris was too languid and too used to Mrs. Drake’s discursive style to inquire why the mention of Dr. Gaskell should have reminded her aunt of the local grocer, though had she done so, she would have received the immediate response: “Because the grocer’s name is Cranford, my dear.” Aunt Lucilla’s reasoning was always crystal clear to herself.

My sister continued: 'What did she die of? Heart failure?'
'Didn't the milkman tell you that?' I inquired sarcastically.
Sarcasm is wasted on Caroline. She takes it seriously and answers accordingly.
'He didn't know,' she explained.

You don't appreciate a faithful husband when you've got one,' said Tommy.
'All my friends tell me you never know with husbands,' said Tuppance.
'You have the wrong kind of friends,' said Tommy.