I walked on by. I was in Birmingham city centre the other day, and it was raining. People rushed by, intent on finding shelter and getting to where they needed to go. I was on my way to the station, in no particular hurry. But I walked on by. He was face down, in a grotty sleeping bag, the rain pounding the thin fabric. He could have been ill. He could have been dead. He was probably hungry, probably thirsty….