“In truth, it has been very like that. Each time I say: this is the end. But no, something else arises! And I will admit it, my friend, the retirement I care for it not at all. If the little grey cells are not exercised, they grow the rust.” “I see,” I said. “You exercise them in moderation.” “Precisely. I pick and choose. For Hercule Poirot nowadays only the cream of crime.”