"Amirror?"shewondered,rubbingthesmoothsurfacewithherslenderfingers."What'ssospecialaboutit?Itlookssoordinary.""Justnotaplainmirror,"repliedthegrandfather.Hisgazedistant,hisvoicewashoa.r.s.easheexplained."It'llchangeyourlifetothedeepestcore.Here,sinceitisyoursixteenthbirthday,I'llpa.s.sittoyouasapresent.""Howwillitchangeanything...