on a great public building. It’s lit up at night, and you can see it from many parts of the city. As I write this, it has just struck the hour. Consider the journey that the clock makes from midnight to midday. The hands start together at 12. They take their time making their separate way around the clock face. Finally they come back together again. It’s the same time as it was when we started, yet it’s half a day later. It’s a different time because of all that has happened in between, and yet it’s