“How long does a mouse live?" "Ah," she said. "I've been waiting for you to ask me that." There was a silence. She sat there smoking away and gazing at the fire. "Well," I said. "How long do we live, us mice?" "I have been reading about mice," she said. "I have been trying to find out everything I can about them." "Go on then, Grandmamma. Why don't you tell me?" "If you really want to know," she said, "I'm afraid a mouse doesn't live for a very long time." "How long?" I asked. "Well, an ordinary mouse only lives for about three years," she said. "But you are not an ordinary mouse. You are a mouse-person, and that is a very different matter." "How different?" I asked. "How long does a mouse-person live, Grandmamma?" "Longer," she said. "Much longer." "A mouse-person will almost certainly live for three times as long as an ordinary mouse," my grandmother said. "About nine years." "Good!" I cried. "That's great! It's the best news I've ever had!" "Why do you say that?" she asked, surprised. "Because I would never want to live longer than you," I said. "I couldn't stand being looked after by anybody else." There was a short silence. She had a way of fondling me behind the ears with the tip of one finger. It felt lovely. "How old are you, Grandmamma?" I asked. "I'm eighty-six," she said. "Will you live another eight or nine years?" "I might," she said. "With a bit of luck." "You've got to," I said. "Because by then I'll be a very old mouse and you'll be a very old grandmother and soon after that we'll both die together." "That would be perfect," she said.”