He was the keeper of the neighborhood. A tall, thin man with white hair who stood watch at his post on the front porch while smoking a cigar. Dan and his wife Helen live in the downstairs apartment and silently tolerate my piano playing, furniture rearranging, and that phase when I attempted to do an aerobic exercise DVD once a day. They never say a word when I turn the radio up late at night and clean house, and don't even mind that my dog barks endlessly with every buzz of the door bell. Dan lit my stove pilot light when it blew out and I was too afraid and inexperienced with gas ovens to do it myself. I once shattered a heavy, glass cooking pan on the floor and 30 seconds later, Dan knocked on my door to make sure I was okay. He doesn't play with the neighborhood kids, but he's always on guard, looking out for them, ready to tell them to stay back from the street, and keeping track of the strangers that walk by on the sidewalk. He and his wife know all the neighbors, t...