Time in a Bottle The photograph shows the door of the front bedroom in our house, where we have lived since summer 1996, when the kids, Bill and Tom, were aged six months and two and a half years. Up to around our older son Bill’s tenth year, the boys shared this bedroom. I know that everything has to change, that time goes on and for the most part we should embrace the change, but there are moments… A couple of years ago, I passed a bicycle with one of those trailers for little kids to sit in behind it. In Cambridge, a cycling town, these vehicles are very common. It was parked outside a front door, and while the mother unlocked the door and secured the bicycle to the adjacent railings, the little three-year-old boy sat in the trailer singing a song to beguile the time. Our boys are aged 28 and 30. I wanted to burst into tears. As you can see, although neither of the boys lives with us any more, we have never taken their names off the door. Since 2000, I have had mobile phon...