On Christmas Eve, many years ago, I lay quietly in my bed. I did not rustle the sheets. I breathed slowly and silently. I was listening for a sound -- a sound a friend had told me I'd never hear -- the ringing bells of Santa's sleigh. 'There is no Santa,' my friend had insisted, but I knew he was wrong. Late that night I did hear sounds, though not of ringing bells. From outside came the sounds of hissing steam and squeaking metal. I looked through my window and saw a train standing perfectly still in from of my house.