David B.

“What one does not tell to Papa Poirot he finds out.”
― Agatha Christie, The Murder of Roger Ackroyd

“Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before," Bokonon tells us. "He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way.”
― Kurt Vonnegut, Cat’s Cradle