Agatha Mary Clarissa Christie, Poirot Investigates (1924)
“ I shrugged my shoulders, slightly annoyed. "But console yourself, mon ami," said Poirot, calming down. "All cannot be as Hercule Poirot! I know it well." "You really have the best opinion of yourself of anyone I ever knew!" I cried, divided between amusement and annoyance. "What will you? When one is unique, one knows it! And others share that opinion—even, if I mistake not, Miss Mary Marvell." ”
