What is the nature of life? What is the nature of time? Those two questions may be difficult to answer scientifically even by an adult. The author used two short conversations with his granddaughter Emma at 7 years of age to let those perceptions be expressed interestingly. The aim of those two dialogs is to give children a rudimentary knowledge on those topics and to induce their curiosity to pursue Biology, Physics, Evolution and Philosophy. Two short poems are attached. They are lyrics of two songs: One for Mother's Day and another for Father's Day. Those naive words express children's love to their parents, which could be used for printing greeting cards that kids wish to send out for mother's birthday and father's birthday. The book was written in English and Chinese dual language, which can be used as a supplemental material for learning Chinese by western people. ????????? ????????? ?????????????????????????7?????????????. ????????????? ??????????????????????????????????????????????????????